Q: What is the sum of all factors of the number 666,981 excluding 666,981?
A: 462,619
The factors of the number 666,981 are: 1, 3, 7, 9, 21, 27, 63, 189, 3529, 10587, 24703, 31761, 74109, 95283, 222327, 666981.
If you add them up, you will get the total of 667,443. Now subtract 666,981 to get 462,619