Factors of 81 are 1, 3, 9, 27, and 81
Hence, Factors of 81 are 1, 3, 9, 27, and 81
A prime number is a number that has exactly two factors, 1 and the number itself. Prime factorization of a number means breaking down of the number into the form of products of its prime factors.
There are two different methods that can be used for the prime factorization.
To find the primefactors of 81 using the division method, follow these steps:
So, the prime factorization of 81 is, 81 = 3 x 3 x 3 x 3.
We can follow the same procedure using the factor tree of 81 as shown below:
So, the prime factorization of 81 is, 81 = 3 x 3 x 3 x 3.
Pair factors of a number are any two numbers which, which on multiplying together, give that number as a result. The pair factors of 81 would be the two numbers which, when multiplied, give 81 as the result.
The following table represents the calculation of factors of 81 in pairs:
| Factor Pair | Pair Factorization |
|---|---|
| 1 and 81 | 1 x 81 = 81 |
| 3 and 27 | 3 x 27 = 81 |
| 9 and 9 | 9 x 9 = 81 |
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 81. They are called negative pair factors.
Hence, the negative pairs of 81 would be ( -1 , -81 ) , ( -3 , -27 ) and ( -9 , -9 ) .
In mathematics a factor is a number which divides into another without leaving any remainder. Or we can say, any two numbers that multiply to give a product are both factors of that product. It can be both positive or negative.
Smallest prime factor of 81 is 3.
Yes 81 is a perfect square.
First five multiples of 81 are 162, 243, 324, 405, 486.
Prime factorization of 81 is 3 x 3 x 3 x 3.
Factors of 81 are 1, 3, 9, 27, 81.
Factors of -81 are -1, -3, -9, -27, -81.
Yes 81 is a whole number.
The greatest factor of 81 is 27.
The factors of 81 are 1, 3, 9, 27, 81.Prime factors of 81 are 3, 3, 3, 3.
Prime factors of 81 are 3, 3, 3, 3.Hence, the product of prime factors of 3.
Factors of 81 are 1, 3, 9, 27, 81.Even factors of 81 are 0.Hence, product of even factors of 81 is; 0 = 0.
Factors of 81 are 1, 3, 9, 27, 81.To calculate the mean we need to calculate the sum of factors first. Sum of factors of 81 is 1 + 3 + 9 + 27 + 81 = 121.Hence, the mean of factors of 81 is 121 ÷ 5 = 24.20.
Positive factors are 1, 3, 9, 27, 81. Negative factors are -1, -3, -9, -27, -81.
Factors of 81 are 1, 3, 9, 27, 81.So there are in total 5 factors.
Prime factors of 81 are 3, 3, 3, 3.So in exponential form it can be written as 34.
4 factor(s) of 81 are 1, 3, 9, 27.