Q: What is the sum of all factors of the number 639,993 excluding 639,993?
A: 217,095
The factors of the number 639,993 are: 1, 3, 383, 557, 1149, 1671, 213331, 639993.
If you add them up, you will get the total of 640,210. Now subtract 639,993 to get 217,095