Q: What is the sum of all factors of the number 21,172 excluding 21,172?
A: 16,908
The factors of the number 21,172 are: 1, 2, 4, 67, 79, 134, 158, 268, 316, 5293, 10586, 21172.
If you add them up, you will get the total of 21,188. Now subtract 21,172 to get 16,908