# Factors of 390 in pair

Factors of 390 in pair are (1, 390) , (2, 195) , (3, 130) , (5, 78) , (6, 65) , (10, 39) , (13, 30) and (15, 26)

#### How to find factors of a number in pair

 1.   Steps to find factors of 390 in pair 2.   What is factors of a number in pair? 3.   What are Factors? 4.   Frequently Asked Questions 5.   Examples of factors in pair

### Example: Find factors of 390 in pair

Factor Pair Pair Factorization
1 and 390 1 x 390 = 390
2 and 195 2 x 195 = 390
3 and 130 3 x 130 = 390
5 and 78 5 x 78 = 390
6 and 65 6 x 65 = 390
10 and 39 10 x 39 = 390
13 and 30 13 x 30 = 390
15 and 26 15 x 26 = 390

Since the product of two negative numbers gives a positive number, the product of the negative values of both the numbers in a pair factor will also give 390. They are called negative pair factors.

Hence, the negative pairs of 390 would be ( -1 , -390 ) .

#### Definition of factor pairs?

In mathematics, factor pair are often given as pair of numbers which when multiplied together give the original number. Every natural number is a product of atleast one factor pair. Eg- Factors of 390 are 1 , 2 , 3 , 5 , 6 , 10 , 13 , 15 , 26 , 30 , 39 , 65 , 78 , 130 , 195 , 390. So, factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26).

#### What are factors?

In mathematics, a factor is that number which divides into another number exactly, without leaving a remainder. A factor of a number can be positive or negative.

#### Properties of Factors

• Each number is a factor of itself. Eg. 390 is a factor of itself.
• Every number other than 1 has at least two factors, namely the number itself and 1.
• Every factor of a number is an exact divisor of that number, example 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390 are exact divisors of 390.
• 1 is a factor of every number. Eg. 1 is a factor of 390.
• Every number is a factor of zero (0), since 390 x 0 = 0.

#### Steps to find Factors of 390

• Step 1. Find all the numbers that would divide 390 without leaving any remainder. Starting with the number 1 upto 195 (half of 390). The number 1 and the number itself are always factors of the given number.
390 ÷ 1 : Remainder = 0
390 ÷ 2 : Remainder = 0
390 ÷ 3 : Remainder = 0
390 ÷ 5 : Remainder = 0
390 ÷ 6 : Remainder = 0
390 ÷ 10 : Remainder = 0
390 ÷ 13 : Remainder = 0
390 ÷ 15 : Remainder = 0
390 ÷ 26 : Remainder = 0
390 ÷ 30 : Remainder = 0
390 ÷ 39 : Remainder = 0
390 ÷ 65 : Remainder = 0
390 ÷ 78 : Remainder = 0
390 ÷ 130 : Remainder = 0
390 ÷ 195 : Remainder = 0
390 ÷ 390 : Remainder = 0

Hence, Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, and 390

• Is 390 a composite number?

Yes 390 is a composite number.

• Is 390 a prime number?

No 390 is not a prime number.

• What is the mean of factors of 390?

Factors of 390 are 1 , 2 , 3 , 5 , 6 , 10 , 13 , 15 , 26 , 30 , 39 , 65 , 78 , 130 , 195 , 390. therefore mean of factors of 390 is (1 + 2 + 3 + 5 + 6 + 10 + 13 + 15 + 26 + 30 + 39 + 65 + 78 + 130 + 195 + 390) / 16 = 63.00.

• What do you mean by proper divisors?

A number x is said to be the proper divisor of y if it divides y completely, given that x is smaller than y.

• What do you mean by improper divisors?

An improper divisor of a number is the number itself apart from this any divisor of a given number is a proper divisor.

#### Examples of Factors

Can you help Rubel in arranging 390 blocks in order to form a rectangle in all possible ways? For arranging 390 blocks in order to form a rectangle in all possible ways we need to find factors of 390 in pair.

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. So, factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26).

Ariel has been asked to write all factor pairs of 390 but she is finding it difficult. Can you help her find out?

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. So, factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26).

How many total number of factors of 390 in pair are possible?

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. Hence, the factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26). Therefore, in total 8 pairs of factors are possible.

Sammy wants to write all the negative factors of 390 in pair, but don't know how to start. Help Sammy in writing all the factor pairs.

Negative factors of 390 are -1, -2, -3, -5, -6, -10, -13, -15, -26, -30, -39, -65, -78, -130, -195, -390. Hence, factors of 390 in pair are (-1,-390), (-2,-195), (-3,-130), (-5,-78), (-6,-65), (-10,-39), (-13,-30), (-15,-26).

Help Deep in writing the positive factors of 390 in pair and negative factor of 390 in pair.

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. Positive factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26). Negative factors of 390 in pair are (-1,-390), (-2,-195), (-3,-130), (-5,-78), (-6,-65), (-10,-39), (-13,-30), (-15,-26).

Find the product of all factors of 390.

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390. So the product of all factors of 390 would be 1 x 2 x 3 x 5 x 6 x 10 x 13 x 15 x 26 x 30 x 39 x 65 x 78 x 130 x 195 x 390 = 535200926048100000000.

A student has been assigned the following tasks by the teacher:
- Finding out all positive factors of 390.
- Writing all prime factors of 390.
- Writing all the possible factors of 390 in pair.
Help him in writing all these.

Positive factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.
Prime factors of 390 are 2, 3, 5, 13.
Factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26).

Can you help Sammy list the factors of 390 and also find the factor pairs?

Factors of 390 are 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390.
Factors of 390 in pair are (1,390), (2,195), (3,130), (5,78), (6,65), (10,39), (13,30), (15,26).