Q: What is the sum of all factors of the number 640,863 excluding 640,863?
A: 315,105
The factors of the number 640,863 are: 1, 3, 9, 31, 93, 279, 2297, 6891, 20673, 71207, 213621, 640863.
If you add them up, you will get the total of 641,178. Now subtract 640,863 to get 315,105