Q: What is the sum of all factors of the number 21,137,513 excluding 21,137,513?
A: 398,875
The factors of the number 21,137,513 are: 1, 53, 398821, 21137513.
If you add them up, you will get the total of 21,137,911. Now subtract 21,137,513 to get 398,875