Since 13 is a Prime number, and is not a factor of 72, the only common integer factor of 13 and 72 is 1.
4 is the GCF of 52 and 72 because 52 = 4 times 13 and 4 divides 72 but 13 does not.
The common factors of 13 and 39 are: 1 and 13
Since 13 is a factor of 39, all of its factors are common.
Since 18 is a factor of 72, all of its factors are common.
The common factors are: 1, 3, 9
The common factors of 72 and 123 are: 1 and 3
The common factors of 72 and 86 are: 1 and 2
Common factors of 81 and 72 are: 1, 3, and 9.
Since 12 is a factor of 72, all of its factors are common.
The common factors of 72 and 81 are: 1, 3, and 9
The common factors of 72 and 99 are 1, 3, and 9
1,2,3,4,6,8,9,12,18,24,36 and 72
There are no common factors of 72 because there cannot be common factors without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The prime factors of 72 are 2, 2, 2, 3, and 3.
Divide both parts by 9, as they are common factors. That gives you 8 and 13.
The common factors of 16 and 72 are 1, 2, 4, 8
4 is the GCF of 52 and 72 because 52 = 4 times 13 and 4 divides 72 but 13 does not.
The common factors of 24 and 72 are: 1, 2, 3, 4, 6, 8, 12, and 24The common factors are: 1, 2, 3, 4, 6, 8, 12, 24