(612,2)(408,3)(306,4)(204,6)(153,8)(136,9)(102,12)(72,17)(68,18)(51,24)(36,34)
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1224
Use a factor tree. 1224 612,2 306,2,2 153,2,2,2 51,3,2,2,2 17,3,3,2,2,2
6 times 13 equals 78 3 times 26 equals 78 2 times 39 equals 78 and 1 times 78 equals 78
3*85=255
1224 = 2 x 2 x 2 x 3 x 3 x 17