1 + 16 + 2 + 8 + 4 = 31
Factors for 16 are: 1, 2, 4, 8, 16 Sum = 1 + 2 + 4 + 8 + 16 = 31
The sum of the factors of 2^16 - 1 = 65535 is 299.
The factors of -84 that equal the sum of -16 are: -28 and 12 -14 and -2 -12 and -4
2,4,8,10 and 16 are factors of 400.
13 and 3
54 and 16.
16 and 3
14 and 2
How about: 4+12 = 16
7 and 9
7 and 9
24 and 16 are factors of 48