Q: What is the sum of all factors of the number 406,978 excluding 406,978?
A: 310,718
The factors of the number 406,978 are: 1, 2, 11, 13, 22, 26, 143, 286, 1423, 2846, 15653, 18499, 31306, 36998, 203489, 406978.
If you add them up, you will get the total of 407,288. Now subtract 406,978 to get 310,718