Q: What is the sum of all factors of the number 642,243 excluding 642,243?
A: 416,589
The factors of the number 642,243 are: 1, 3, 7, 17, 21, 49, 51, 119, 147, 257, 357, 771, 833, 1799, 2499, 4369, 5397, 12593, 13107, 30583, 37779, 91749, 214081, 642243.
If you add them up, you will get the total of 642,659. Now subtract 642,243 to get 416,589