Q: What is the sum of all factors of the number 21,605 excluding 21,605?
A: 5,395
The factors of the number 21,605 are: 1, 5, 29, 145, 149, 745, 4321, 21605.
If you add them up, you will get the total of 21,610. Now subtract 21,605 to get 5,395