Q: What is the sum of all factors of the number 1,287,406 excluding 1,287,406?
A: 643,706
The factors of the number 1,287,406 are: 1, 2, 643703, 1287406.
If you add them up, you will get the total of 1,288,049. Now subtract 1,287,406 to get 643,706