Q: What is the sum of all factors of the number 1,991,873 excluding 1,991,873?
A: 279,655
The factors of the number 1,991,873 are: 1, 13, 17, 221, 9013, 117169, 153221, 1991873.
If you add them up, you will get the total of 1,992,152. Now subtract 1,991,873 to get 279,655