Q: What is the sum of all factors of the number 21,208,409 excluding 21,208,409?
A: 255,607
The factors of the number 21,208,409 are: 1, 83, 255523, 21208409.
If you add them up, you will get the total of 21,208,664. Now subtract 21,208,409 to get 255,607