Q: What is the sum of all factors of the number 1,207,209 excluding 1,207,209?
A: 402,407
The factors of the number 1,207,209 are: 1, 3, 402403, 1207209.
If you add them up, you will get the total of 1,207,611. Now subtract 1,207,209 to get 402,407