Q: What is the sum of all factors of the number 405,324 excluding 405,324?

A: 665,816

Why is 665,816 the sum of all factors of 405,324, excluding 405,324?

The factors of the number 405,324 are: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 139, 162, 243, 278, 324, 417, 486, 556, 729, 834, 972, 1251, 1458, 1668, 2502, 2916, 3753, 5004, 7506, 11259, 15012, 22518, 33777, 45036, 67554, 101331, 135108, 202662, 405324.

If you add them up, you will get the total of 405,989. Now subtract 405,324 to get 665,816