Q: What is the sum of all factors of the number 21,825 excluding 21,825?
A: 17,669
The factors of the number 21,825 are: 1, 3, 5, 9, 15, 25, 45, 75, 97, 225, 291, 485, 873, 1455, 2425, 4365, 7275, 21825.
If you add them up, you will get the total of 21,842. Now subtract 21,825 to get 17,669