Q: What is the sum of all factors of the number 21,421,121 excluding 21,421,121?
A: 15,379
The factors of the number 21,421,121 are: 1, 1549, 13829, 21421121.
If you add them up, you will get the total of 21,421,136. Now subtract 21,421,121 to get 15,379