Q: What is the sum of all factors of the number 216,513 excluding 216,513?
A: 137,775
The factors of the number 216,513 are: 1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 729, 891, 2187, 2673, 6561, 8019, 19683, 24057, 72171, 216513.
If you add them up, you will get the total of 216,650. Now subtract 216,513 to get 137,775