Q: What is the sum of all factors of the number 21,690 excluding 21,690?
A: 34,938
The factors of the number 21,690 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 241, 482, 723, 1205, 1446, 2169, 2410, 3615, 4338, 7230, 10845, 21690.
If you add them up, you will get the total of 21,724. Now subtract 21,690 to get 34,938