Q: What is the sum of all factors of the number 63,891 excluding 63,891?
A: 31,789
The factors of the number 63,891 are: 1, 3, 9, 31, 93, 229, 279, 687, 2061, 7099, 21297, 63891.
If you add them up, you will get the total of 63,922. Now subtract 63,891 to get 31,789