Q: What is the sum of all factors of the number 21,573 excluding 21,573?
A: 12,987
The factors of the number 21,573 are: 1, 3, 9, 17, 27, 47, 51, 141, 153, 423, 459, 799, 1269, 2397, 7191, 21573.
If you add them up, you will get the total of 21,585. Now subtract 21,573 to get 12,987