Q: What is the sum of all factors of the number 1,991,631 excluding 1,991,631?
A: 725,809
The factors of the number 1,991,631 are: 1, 3, 43, 129, 15439, 46317, 663877, 1991631.
If you add them up, you will get the total of 1,992,356. Now subtract 1,991,631 to get 725,809