Q: What is the sum of all factors of the number 639,665 excluding 639,665?
A: 192,619
The factors of the number 639,665 are: 1, 5, 13, 65, 169, 757, 845, 3785, 9841, 49205, 127933, 639665.
If you add them up, you will get the total of 639,857. Now subtract 639,665 to get 192,619