Q: What is the sum of all factors of the number 398,990 excluding 398,990?
A: 361,762
The factors of the number 398,990 are: 1, 2, 5, 10, 17, 34, 85, 170, 2347, 4694, 11735, 23470, 39899, 79798, 199495, 398990.
If you add them up, you will get the total of 399,351. Now subtract 398,990 to get 361,762