Since 12 is a factor of 72, all of its factors are common.
The common factors are: 1, 2, 3, 6
2 and 4
4
1 and 3
Since 12 is a factor of 36, all of the factors of 12 are common to 36.
72
24, 48, 72, 96, 120, 144, 168, 192, 216 and 240....
The common factors of 72 and 123 are: 1 and 3
The common factors of 72 and 86 are: 1 and 2
The factors of 8 are: 1, 2, 4, 8.The factors of 12 are: 1, 2, 3, 4, 6, 12.The common factors are: 1, 2, 4
The common factors of 72 and 81 are: 1, 3, and 9
The common factors of 72 and 99 are 1, 3, and 9