Q: What is the sum of all factors of the number 21,131 excluding 21,131?
A: 3,493
The factors of the number 21,131 are: 1, 11, 17, 113, 187, 1243, 1921, 21131.
If you add them up, you will get the total of 21,134. Now subtract 21,131 to get 3,493