Q: What is the sum of all factors of the number 11,139 excluding 11,139?
A: 4,221
The factors of the number 11,139 are: 1, 3, 47, 79, 141, 237, 3713, 11139.
If you add them up, you will get the total of 11,143. Now subtract 11,139 to get 4,221