Q: What is the sum of all factors of the number 2,139,721 excluding 2,139,721?
A: 4,023
The factors of the number 2,139,721 are: 1, 631, 3391, 2139721.
If you add them up, you will get the total of 2,139,725. Now subtract 2,139,721 to get 4,023