Q: What is the sum of all factors of the number 2,151,721 excluding 2,151,721?
A: 444,887
The factors of the number 2,151,721 are: 1, 11, 13, 41, 143, 367, 451, 533, 4037, 4771, 5863, 15047, 52481, 165517, 195611, 2151721.
If you add them up, you will get the total of 2,152,165. Now subtract 2,151,721 to get 444,887