Q: What is the sum of all factors of the number 71,981 excluding 71,981?
A: 18,991
The factors of the number 71,981 are: 1, 7, 13, 49, 91, 113, 637, 791, 1469, 5537, 10283, 71981.
If you add them up, you will get the total of 71,999. Now subtract 71,981 to get 18,991