Q: What is the sum of all factors of the number 20,450 excluding 20,450?
A: 17,680
The factors of the number 20,450 are: 1, 2, 5, 10, 25, 50, 409, 818, 2045, 4090, 10225, 20450.
If you add them up, you will get the total of 20,467. Now subtract 20,450 to get 17,680