Q: What is the sum of all factors of the number 2,161,621 excluding 2,161,621?
A: 580,139
The factors of the number 2,161,621 are: 1, 7, 11, 67, 77, 419, 469, 737, 2933, 4609, 5159, 28073, 32263, 196511, 308803, 2161621.
If you add them up, you will get the total of 2,162,201. Now subtract 2,161,621 to get 580,139