Q: What is the sum of all factors of the number 403,989 excluding 403,989?
A: 137,643
The factors of the number 403,989 are: 1, 3, 311, 433, 933, 1299, 134663, 403989.
If you add them up, you will get the total of 404,126. Now subtract 403,989 to get 137,643