Q: What is the sum of all factors of the number 640,657 excluding 640,657?
A: 30,959
The factors of the number 640,657 are: 1, 43, 47, 317, 2021, 13631, 14899, 640657.
If you add them up, you will get the total of 640,687. Now subtract 640,657 to get 30,959