Q: What is the sum of all factors of the number 42,021 excluding 42,021?
A: 32,859
The factors of the number 42,021 are: 1, 3, 7, 9, 21, 23, 29, 63, 69, 87, 161, 203, 207, 261, 483, 609, 667, 1449, 1827, 2001, 4669, 6003, 14007, 42021.
If you add them up, you will get the total of 42,053. Now subtract 42,021 to get 32,859