Q: What is the sum of all factors of the number 18,921 excluding 18,921?
A: 12,183
The factors of the number 18,921 are: 1, 3, 7, 17, 21, 51, 53, 119, 159, 357, 371, 901, 1113, 2703, 6307, 18921.
If you add them up, you will get the total of 18,933. Now subtract 18,921 to get 12,183