Q: What is the sum of all factors of the number 21,726 excluding 21,726?
A: 28,818
The factors of the number 21,726 are: 1, 2, 3, 6, 9, 17, 18, 34, 51, 71, 102, 142, 153, 213, 306, 426, 639, 1207, 1278, 2414, 3621, 7242, 10863, 21726.
If you add them up, you will get the total of 21,754. Now subtract 21,726 to get 28,818