Q: What is the sum of all factors of the number 1,215,309 excluding 1,215,309?
A: 442,963
The factors of the number 1,215,309 are: 1, 3, 43, 129, 9421, 28263, 405103, 1215309.
If you add them up, you will get the total of 1,215,751. Now subtract 1,215,309 to get 442,963