212
-38
100 and 100 can add to 200 50, 50, 50, and 50 can add to 200 8 25s can add to 200 20 10s can add to 200
497
-261
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36 No two of them add up to 23.
170
1012
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
4 and 12
12+12+12+12
-144
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
-38
-1, 6 and -12.
375
-10 and 2 -12 and 4 -20 and 12
Well, 18 and 3 (both factors of 36) add up to 21. As well, the factors 12 and 9 add up to 21.