Q: What is the sum of all factors of the number 20,139 excluding 20,139?
A: 11,325
The factors of the number 20,139 are: 1, 3, 7, 21, 49, 137, 147, 411, 959, 2877, 6713, 20139.
If you add them up, you will get the total of 20,150. Now subtract 20,139 to get 11,325