1 and 19
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Only 1 and 19 because 19 is a prime number.
There are no other whole numbers besides ' 1 ' and 19 that go into 19 evenly. That makes 19 a prime number.
it is a prime number
Any number can go into 57.But if you want the number to go into 57 evenly, without fractions or remainder,then the only possibilities are1, -1, 3, -3, 19, -19, 57, and -57.
The number that both 7 and 8 can go into evenly is 56.