Q: What is the sum of all factors of the number 639,902 excluding 639,902?
A: 351,010
The factors of the number 639,902 are: 1, 2, 31, 62, 10321, 20642, 319951, 639902.
If you add them up, you will get the total of 640,253. Now subtract 639,902 to get 351,010