Only 1 and 3.
15 and 22 share no common factors aside from 1.
15 and 23 share no common factors aside from 1.
8 and 15 share no common factors aside from 1. 8 and 15 are coprime.
Common factors of 12, 15, and 18 are: 1 and 3.
The common factors are: 1, 3
The common factors of 12 and 15 are 1 and 3.
The common factors of 9, 12, and 15 are 1 and 3. The GCF is 3.
The only common factor of 12, 35 and 15 is: 1
3
The factors of 9 are 1, 3, and 9. The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 15 are 1, 3, 5, and 15. The common factors of 9, 12, and 15 are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1.
The common factors are 1 and 3. The greatest of these is 3.
The factors of 12 are: 1, 2, 3, 4, 6, 12The factors of 15 are: 1, 3, 5, 15The common factors are: 1, 3