Q: What is the sum of all factors of the number 207,621 excluding 207,621?
A: 129,339
The factors of the number 207,621 are: 1, 3, 9, 17, 23, 51, 59, 69, 153, 177, 207, 391, 531, 1003, 1173, 1357, 3009, 3519, 4071, 9027, 12213, 23069, 69207, 207621.
If you add them up, you will get the total of 207,750. Now subtract 207,621 to get 129,339