Q: What is the sum of all factors of the number 215,172 excluding 215,172?
A: 345,388
The factors of the number 215,172 are: 1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 139, 172, 258, 278, 387, 417, 516, 556, 774, 834, 1251, 1548, 1668, 2502, 5004, 5977, 11954, 17931, 23908, 35862, 53793, 71724, 107586, 215172.
If you add them up, you will get the total of 215,517. Now subtract 215,172 to get 345,388