Itself and any of its multiples
7 and 9 are two numbers that go into 63.
1 and 3 can go into 12 and 63.
1,3,7.9,21
1, 3, 7, 9, 21 and 63.
1, 3, 7, 9, 21, 63.
1, 3, 7, 9, 21, 63.
1, 3, 7, 9, 21, 63.
1, 3, 7, 9, 21, 63.
The number 63 can be evenly divided by 1, 3, 7, 9, 21, and 63.
3 and 7
1 and 7.
There are infinitely many numbers divisible by 63, just multiply 63 by any whole number and you'll get one.