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(218,1)(109,2)
The math factor pairs of 18 are (1,18) , (2,9) , (3,6) .
21,17,3
827 and 1.
1,8 2,4
(49,1)(7,7)
10x1 1x105x22x5
1x125 5x25
1 and 73
(4,1)(2,2)
(14,1)(7,2)
(1,100) (10,10)
(2005,1)(401,5)