Q: What is the sum of all factors of the number 15,399 excluding 15,399?
A: 8,001
The factors of the number 15,399 are: 1, 3, 9, 29, 59, 87, 177, 261, 531, 1711, 5133, 15399.
If you add them up, you will get the total of 15,407. Now subtract 15,399 to get 8,001