Q: What is the sum of all factors of the number 1,216,221 excluding 1,216,221?
A: 405,411
The factors of the number 1,216,221 are: 1, 3, 405407, 1216221.
If you add them up, you will get the total of 1,216,626. Now subtract 1,216,221 to get 405,411