Q: What is the sum of all factors of the number 408,920 excluding 408,920?
A: 511,240
The factors of the number 408,920 are: 1, 2, 4, 5, 8, 10, 20, 40, 10223, 20446, 40892, 51115, 81784, 102230, 204460, 408920.
If you add them up, you will get the total of 409,431. Now subtract 408,920 to get 511,240