Q: What is the sum of all factors of the number 21,177 excluding 21,177?
A: 11,947
The factors of the number 21,177 are: 1, 3, 9, 13, 39, 117, 181, 543, 1629, 2353, 7059, 21177.
If you add them up, you will get the total of 21,188. Now subtract 21,177 to get 11,947