-144
-1, 6 and -12.
-10 and 2 -12 and 4 -20 and 12
Factors multiply, like 4 and 6 or 3 and 8 or 2 and 12.
0
212
4 and 12
12+12+12+12
-144
375
-38
-1, 6 and -12.
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
-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.
-8
60