Q: What is the sum of all factors of the number 21,403,663 excluding 21,403,663?
A: 1,259,057
The factors of the number 21,403,663 are: 1, 17, 1259039, 21403663.
If you add them up, you will get the total of 21,403,664. Now subtract 21,403,663 to get 1,259,057