Q: What is the sum of all factors of the number 403,960 excluding 403,960?
A: 505,040
The factors of the number 403,960 are: 1, 2, 4, 5, 8, 10, 20, 40, 10099, 20198, 40396, 50495, 80792, 100990, 201980, 403960.
If you add them up, you will get the total of 404,465. Now subtract 403,960 to get 505,040