The factor pairs of 57 are 3x19 and 1x57
The factor pairs of 343 are (343,1) and (49,7)
20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)
The factor pairs of 12 are (12,1), (6,2), and (4,3) The factor pairs of 18 are (18,1), (9,2), and (6,3)
The factor pairs of 111 are 1x111, 11x10. These are in order.
55 = 1 x 55 55 = 5 x 11
If you include fractions and decimals, then there are aninfinite number of such pairs, so they can't be listed.If you're satisfied to limit the discussion to whole numbers,then the pairs are:1 x 555 x 11-1 x -55-5 x 11
-49
Yes. Factor pairs are always repeated across pairs since factor pairs are certain kinds of pairs.
(550, 1) (275, 2) (110, 5) (55, 10) (50, 11) (25, 22)
the factor pairs are 1x35 & 5x7
The factor pairs of 28 are :28,114,27,4
Sixteen factor pairs.
The factor pairs of 260 are (260,1), (130,2), (65,4), (52,5), (26,10), and (20,13)
The factor pairs of 57 are 3x19 and 1x57
The factor pairs of 27 are 1x27 and 3x9.
Mathematicians call them "factor pairs."