Q: What is the sum of all factors of the number 815,720 excluding 815,720?
A: 1,019,740
The factors of the number 815,720 are: 1, 2, 4, 5, 8, 10, 20, 40, 20393, 40786, 81572, 101965, 163144, 203930, 407860, 815720.
If you add them up, you will get the total of 815,721. Now subtract 815,720 to get 1,019,740