Q: What is the sum of all factors of the number 856,359 excluding 856,359?
A: 664,281
The factors of the number 856,359 are: 1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 197, 207, 483, 591, 621, 1379, 1449, 1773, 4137, 4347, 4531, 5319, 12411, 13593, 31717, 37233, 40779, 95151, 122337, 285453, 856359.
If you add them up, you will get the total of 857,023. Now subtract 856,359 to get 664,281