What are common factors for eight and 16?

Answer 1

The factors of 16 are: 1, 2, 4, 8, 16

The factors of 81 are: 1, 3, 9, 27, 81

The common factors are: 1

The Greatest Common Factor (GCF) is: 1

Answer 2

To find the common factors you reduce each number to its primes. A prime is a number that can only be divided by one to get a unique whole number.

Definition Of Common Factor: A number that will divide into two numbers evenly.

Prime's

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81=3x3x3x3

36=3x3x4

Since both numbers have (2) 3's in common 3 and 9 are common factors.

Answer 3

16 and 81 share no common factors aside from 1.

Answer 4

The factors of 8 are: 1, 2, 4, 8

The factors of 16 are: 1, 2, 4, 8, 16

The common factors are: 1, 2, 4, 8

Answer 5

The factors of 65 are: 1, 5, 13, 65

The factors of 81 are: 1, 3, 9, 27, 81

The only common factor is: 1

Answer 6

Common factors of 16 and 88 are: 1, 2, 4, and 8.

Answer 7

Since 8 is a factor of 16, all of its factors are common.

Answer 8

The common factors are: 1, 3, 9, 27.