Q: What is the sum of all factors of the number 21,340 excluding 21,340?
A: 28,052
The factors of the number 21,340 are: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 1067, 1940, 2134, 4268, 5335, 10670, 21340.
If you add them up, you will get the total of 21,368. Now subtract 21,340 to get 28,052