Q: What is the sum of all factors of the number 31,521 excluding 31,521?
A: 19,679
The factors of the number 31,521 are: 1, 3, 7, 19, 21, 57, 79, 133, 237, 399, 553, 1501, 1659, 4503, 10507, 31521.
If you add them up, you will get the total of 31,540. Now subtract 31,521 to get 19,679