Q: What is the sum of all factors of the number 402,129 excluding 402,129?
A: 314,223
The factors of the number 402,129 are: 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 491, 819, 1473, 3437, 4419, 6383, 10311, 19149, 30933, 44681, 57447, 134043, 402129.
If you add them up, you will get the total of 402,443. Now subtract 402,129 to get 314,223