Q: What is the sum of all factors of the number 406,280 excluding 406,280?
A: 639,160
The factors of the number 406,280 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1451, 2902, 5804, 7255, 10157, 11608, 14510, 20314, 29020, 40628, 50785, 58040, 81256, 101570, 203140, 406280.
If you add them up, you will get the total of 406,919. Now subtract 406,280 to get 639,160