Q: What is the sum of all factors of the number 1,291,390 excluding 1,291,390?
A: 1,060,850
The factors of the number 1,291,390 are: 1, 2, 5, 10, 89, 178, 445, 890, 1451, 2902, 7255, 14510, 129139, 258278, 645695, 1291390.
If you add them up, you will get the total of 1,291,391. Now subtract 1,291,390 to get 1,060,850