Q: What is the sum of all factors of the number 215,859 excluding 215,859?
A: 131,021
The factors of the number 215,859 are: 1, 3, 7, 19, 21, 57, 133, 399, 541, 1623, 3787, 10279, 11361, 30837, 71953, 215859.
If you add them up, you will get the total of 215,990. Now subtract 215,859 to get 131,021