Only 1 and 13, it's a prime.
1 and 13.
1 and 13.
1 and 13. 13 is a prime number, thus only 1 and itself can go into it.
13
Only 1 and 13; 13 is a prime number.
1 and 13.
They are: 2 and 13
13, 77.
7 13
These numbers go evenly into 52: 1, 2, 4, 13, 26, 52.
There are infinitely many such numbers.
1, 7, 13 and 91 are the only four numbers that go into 91.