Q: What is the sum of all factors of the number 431,780 excluding 431,780?
A: 475,000
The factors of the number 431,780 are: 1, 2, 4, 5, 10, 20, 21589, 43178, 86356, 107945, 215890, 431780.
If you add them up, you will get the total of 432,255. Now subtract 431,780 to get 475,000