Q: What is the sum of all factors of the number 1,212,405 excluding 1,212,405?
A: 745,419
The factors of the number 1,212,405 are: 1, 3, 5, 15, 131, 393, 617, 655, 1851, 1965, 3085, 9255, 80827, 242481, 404135, 1212405.
If you add them up, you will get the total of 1,213,150. Now subtract 1,212,405 to get 745,419