1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90: 1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, 9 x 10
45 and 2.
90
-117
270
The numbers are 10 and -9
-117
It is not possible to multiply two prime numbers and get 90. You can add 43 and 47.
360
111
-9 and 10
-30 and 3
12 10 10 10