30
-5
They are: 3+2 = 5 and 3^2 = 9
-2 and -3 -2 + (-3) = -5 -2 x -3 = 6
3
The numbers are 2 and -5
As a product of its prime factors: 2*2*3*3*5 = 180
As a product of its prime factors: 2*2*3*5 = 60
5
1 and 5
-3
1 2 3 5 6 9 10 15 18 30 45
As a product of its prime factors: 2*2*5*5 = 100