Q: What is the sum of all factors of the number 2,151,209 excluding 2,151,209?
A: 4,651
The factors of the number 2,151,209 are: 1, 521, 4129, 2151209.
If you add them up, you will get the total of 2,151,213. Now subtract 2,151,209 to get 4,651