The factor pairs of 180 are:
1 x 180
2 x 90
3 x 60
4 x 45
5 x 36
6 x 30
9 x 20
10 x 18
The math factor pairs of 18 are (1,18) , (2,9) , (3,6) .
21,17,3
1,8 2,4
10x1 1x105x22x5
1 and 73
1x125 5x25
(218,1)(109,2)
(49,1)(7,7)
827 and 1.
(14,1)(7,2)
(4,1)(2,2)
(1,100) (10,10)