2 & 103
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
none
The prime factorization of 56 is 2, 2, 2, and 7, so there there are two prime numbers, 2 and 7, that can evenly go into 56.
These numbers go into 634 evenly: 1, 2, 317, 634.
5, 103
2 & 103
Not evenly. 125 is an odd number and 2 can only go into even numbers evenly.
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
2
none
The prime factorization of 56 is 2, 2, 2, and 7, so there there are two prime numbers, 2 and 7, that can evenly go into 56.
The numbers that go into 30 are1, 2, 3, 5, 30, 15, 10, 6
These numbers go into 634 evenly: 1, 2, 317, 634.
2 and 3, for a start.
These whole numbers go evenly into 64: 1, 2, 4, 8, 16, 32, 64.
The numbers are 1, 2, 4.