Q: What is the sum of all factors of the number 1,386,621 excluding 1,386,621?
A: 663,427
The factors of the number 1,386,621 are: 1, 3, 9, 43, 129, 387, 3583, 10749, 32247, 154069, 462207, 1386621.
If you add them up, you will get the total of 1,387,284. Now subtract 1,386,621 to get 663,427