Q: What is the sum of all factors of the number 3,720,721 excluding 3,720,721?
A: 13,523
The factors of the number 3,720,721 are: 1, 281, 13241, 3720721.
If you add them up, you will get the total of 3,720,734. Now subtract 3,720,721 to get 13,523