Q: What is the sum of all factors of the number 667,990 excluding 667,990?
A: 553,562
The factors of the number 667,990 are: 1, 2, 5, 10, 67, 134, 335, 670, 997, 1994, 4985, 9970, 66799, 133598, 333995, 667990.
If you add them up, you will get the total of 668,543. Now subtract 667,990 to get 553,562