Q: What is the sum of all factors of the number 21,556 excluding 21,556?
A: 18,512
The factors of the number 21,556 are: 1, 2, 4, 17, 34, 68, 317, 634, 1268, 5389, 10778, 21556.
If you add them up, you will get the total of 21,574. Now subtract 21,556 to get 18,512