Q: What is the sum of all factors of the number 21,920 excluding 21,920?
A: 30,244
The factors of the number 21,920 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 1096, 1370, 2192, 2740, 4384, 5480, 10960, 21920.
If you add them up, you will get the total of 21,950. Now subtract 21,920 to get 30,244