Q: What is the sum of all factors of the number 680,810 excluding 680,810?
A: 639,166
The factors of the number 680,810 are: 1, 2, 5, 10, 13, 26, 65, 130, 5237, 10474, 26185, 52370, 68081, 136162, 340405, 680810.
If you add them up, you will get the total of 681,449. Now subtract 680,810 to get 639,166