Q: What is the sum of all factors of the number 4,815 excluding 4,815?
A: 3,609
The factors of the number 4,815 are: 1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4815.
If you add them up, you will get the total of 4,818. Now subtract 4,815 to get 3,609