Q: What is the sum of all factors of the number 21,087,409 excluding 21,087,409?
A: 3,790,159
The factors of the number 21,087,409 are: 1, 7, 31, 217, 97177, 680239, 3012487, 21087409.
If you add them up, you will get the total of 21,087,412. Now subtract 21,087,409 to get 3,790,159