There are infinitely many number pairs:
Select any number, X, greater than sqrt(630) = 25.1
Let Y = 630/X
Then X*Y = X*(630/X) = 630
Since there are infinitely many numbers greater than 25.1 and X can be any one of them, there are infinitely many possible answers.
9
38 and 8
21 and 5
The numbers are: -5 and 3
111 = 3*37
10 and 63
5 and -3
6x7
9
i have no idea what it is but i think its something you multiply by itself and you will get the answer.
When you multiply two numbers, you get the product
199
38 and 8
12 and 100
240 and 1
21 and 5
-1