Q: What is the sum of all factors of the number 21,428 excluding 21,428?
A: 19,564
The factors of the number 21,428 are: 1, 2, 4, 11, 22, 44, 487, 974, 1948, 5357, 10714, 21428.
If you add them up, you will get the total of 21,447. Now subtract 21,428 to get 19,564