-38
497
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
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36 No two of them add up to 23.
-261
170
1012
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