Q: What is the sum of all factors of the number 21,291 excluding 21,291?
A: 7,893
The factors of the number 21,291 are: 1, 3, 47, 141, 151, 453, 7097, 21291.
If you add them up, you will get the total of 21,298. Now subtract 21,291 to get 7,893