Q: What is the sum of all factors of the number 640,635 excluding 640,635?
A: 384,405
The factors of the number 640,635 are: 1, 3, 5, 15, 42709, 128127, 213545, 640635.
If you add them up, you will get the total of 641,019. Now subtract 640,635 to get 384,405