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Anonymous
1x3 and 3x1 and -1x-3 and -3x-1
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1 and 3.
There are 3 factor pairs of 63:63 = 1 x 6363 = 3 x 2163 = 7 x 9
They are: 3 times 31 = 93 and 1 times 93 = 93
1 and 27 3 and 9
3 x 3x
20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)
12 has 3 factor pairs and the pairs are (1,12), (2,6) and (3,4).
1 and 3
The factor pairs of 15 are 1 x 15 and 3 x 5.
76 has 3 factor pairs: (1,76), (2,38), (4,19).
12 and 18 have three factor pairs.
The factor pairs of 123 are 1 x 123 and 3 x 41
The factor pairs of 213 are 1 x 213 and 3 x 71.
The factor pairs of 141 are 1 x 141, and 3 x 47.
The factor pairs of 39 are 1 x 39 and 3 x 13