Q: What is the sum of all factors of the number 21,375 excluding 21,375?
A: 19,185
The factors of the number 21,375 are: 1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 125, 171, 225, 285, 375, 475, 855, 1125, 1425, 2375, 4275, 7125, 21375.
If you add them up, you will get the total of 21,394. Now subtract 21,375 to get 19,185