Q: What is the sum of all factors of the number 71,991 excluding 71,991?
A: 37,729
The factors of the number 71,991 are: 1, 3, 9, 19, 57, 171, 421, 1263, 3789, 7999, 23997, 71991.
If you add them up, you will get the total of 72,028. Now subtract 71,991 to get 37,729