Q: What is the sum of all factors of the number 42,129 excluding 42,129?
A: 21,103
The factors of the number 42,129 are: 1, 3, 9, 31, 93, 151, 279, 453, 1359, 4681, 14043, 42129.
If you add them up, you will get the total of 42,150. Now subtract 42,129 to get 21,103