Q: What is the sum of all factors of the number 1,287,838 excluding 1,287,838?
A: 643,922
The factors of the number 1,287,838 are: 1, 2, 643919, 1287838.
If you add them up, you will get the total of 1,288,481. Now subtract 1,287,838 to get 643,922