Q: What is the sum of all factors of the number 19,540 excluding 19,540?
A: 21,536
The factors of the number 19,540 are: 1, 2, 4, 5, 10, 20, 977, 1954, 3908, 4885, 9770, 19540.
If you add them up, you will get the total of 19,561. Now subtract 19,540 to get 21,536