Q: What is the sum of all factors of the number 153,639 excluding 153,639?
A: 74,017
The factors of the number 153,639 are: 1, 3, 9, 43, 129, 387, 397, 1191, 3573, 17071, 51213, 153639.
If you add them up, you will get the total of 153,713. Now subtract 153,639 to get 74,017