225 has five factor pairs:
225,175,345,525,915,15
225,175,345,525,915,15
The factor pairs of 225 are 1 x 225, 3 x 75, 5 x 45, 9 x 25, and 15 x 15
5, 0, 25, 1, 225,
1x225, 3x75, 5x45, 9x25, 15x15
Sixteen factor pairs.
2 factor pairs
There are 3 factor pairs of 16.
Three factor pairs
30 has four factor pairs:30,115,210,36,5
1 x225 ,3x 75, 5x45,9x25,15x15 I think those are all of them