1 and 16
2 and 8
4 and 4
2,4,8 (1 and 16 are divisors too, but the number and 1 are always divisors)
The divisors of 32 are: 1, 2, 4, 8, 16, 32.
The divisors of 64 are: 1 2 4 8 16 32 64.
16 by 2,4 by 8.
64 has seven divisors: 1, 2, 4, 8, 16, 32, 64.
The divisors of 16 are 2, 4 and 8. The divisors of 24 are 2, 3, 4, 8 and 12. Hence the GCD is 8.
The divisors of 16 are 2, 4 and 8. The divisors of 24 are 2, 3, 4, 8 and 12. Hence the GCD is 8.
32 has six divisors (factors): 1, 2, 4, 8, 16, 32.
64 has 7 divisors: 1 2 4 8 16 32 64.
The divisors of 80 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.
These are all the divisors of 64: 1, 2, 4, 8, 16, 32, 64.
To divide 32 students into groups with equal numbers of students, the group sizes must be divisors of 32. The divisors of 32 are 1, 2, 4, 8, 16, and 32. Therefore, the students can be grouped into 1 group of 32, 2 groups of 16, 4 groups of 8, 8 groups of 4, 16 groups of 2, or 32 groups of 1.