Q: What is the sum of all factors of the number 21,220 excluding 21,220?
A: 23,384
The factors of the number 21,220 are: 1, 2, 4, 5, 10, 20, 1061, 2122, 4244, 5305, 10610, 21220.
If you add them up, you will get the total of 21,243. Now subtract 21,220 to get 23,384