Q: What is the sum of all factors of the number 642,609 excluding 642,609?
A: 370,143
The factors of the number 642,609 are: 1, 3, 9, 11, 33, 99, 6491, 19473, 58419, 71401, 214203, 642609.
If you add them up, you will get the total of 642,979. Now subtract 642,609 to get 370,143