1 and 3
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36 The factors of 57 are 1, 3, 19, and 57
The common factors of 9 and 36 are: 1, 3, and 9
Since 9 is a factor of 36, all of its factors are common.
Common factors of 6, 9, and 36 are: 1 and 3.
The common factors of 27 and 36 are 1, 3 and 9.
The factors of 57 are 1, 3, 19, 57.The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.Their common factors are 1 and 3.
The common factors of 9 and 36 are 1, 3, and 9.
The common factors of 36 and 63 are 1, 3 and 9
The common factors of 36 and 81 are: 1, 3, and 9
The common factors of 36 and 99 are: 1, 3, 9
The common factors of 36 and 27 are 1, 3 & 9; the highest common factor is 9.
The factors of 9 are 1, 3, and 9. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 9 and 36 are 1, 3, and 9. Therefore, the least (smallest) common factor is 1.