Factors of 640 that add upto 24 are 4 and 20

- Find all factors.
- Then we find the sum of combinations of factors.
- Note down the combination of factors with sum as 24, and read off the answer!

- Sum of
**4 and 20 : 4 + 20 = 24**

Hence, factors of
*640* that add upto *24* are **4 and 20**.

**Step 1.**Find all the numbers that would divide 640 without leaving any remainder. Starting with the number 1 upto 320 (half of 640). The number 1 and the number itself are always factors of the given number.640 ÷ 1 : Remainder = 0640 ÷ 2 : Remainder = 0640 ÷ 4 : Remainder = 0640 ÷ 5 : Remainder = 0640 ÷ 8 : Remainder = 0640 ÷ 10 : Remainder = 0640 ÷ 16 : Remainder = 0640 ÷ 20 : Remainder = 0640 ÷ 32 : Remainder = 0640 ÷ 40 : Remainder = 0640 ÷ 64 : Remainder = 0640 ÷ 80 : Remainder = 0640 ÷ 128 : Remainder = 0640 ÷ 160 : Remainder = 0640 ÷ 320 : Remainder = 0640 ÷ 640 : Remainder = 0

Hence, Factors of
*640* are **1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, and 640**

In mathematics, the term factor is used for that number which divides the other number to leave 0 as a remainder. A factor of a number can be positive or negative.

- Factors and multiples are two different terms. Factors are those number which when multiplied together give the number itself, on the other hand multiples are what we get after multiplying the same number with and other number.
- Prime factors are those factors which are further divisible by only two numbers i.e. 1 ans the factor itself.
- Every number is a factor of zero (0), since 640 x 0 = 0.
- 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, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 are exact divisors of 640.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

So there are in total 16 factors.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

Prime factors of 640 are 2, 2, 2, 2, 2, 2, 2, 5.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

Factors of 640 that add upto 24 are 4, 20, as 4 + 20 = 24.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

Even factors of 640 are 2, 4, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640. Largest factor f 640 is 640.

Factors of 640 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.

Prime factors of 640 are 2, 2, 2, 2, 2, 2, 2, 5

Negative factors of 640 are -1, -2, -4, -5, -8, -10, -16, -20, -32, -40, -64, -80, -128, -160, -320, -640. Hence, factors of 640 in pair are (-1,-640), (-2,-320), (-4,-160), (-5,-128), (-8,-80), (-10,-64), (-16,-40), (-20,-32).