Q: What is the sum of all factors of the number 15,642 excluding 15,642?
A: 21,798
The factors of the number 15,642 are: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 79, 99, 158, 198, 237, 474, 711, 869, 1422, 1738, 2607, 5214, 7821, 15642.
If you add them up, you will get the total of 15,663. Now subtract 15,642 to get 21,798