Q: What is the sum of all factors of the number 405,540 excluding 405,540?

A: 857,820

Why is 857,820 the sum of all factors of 405,540, excluding 405,540?

The factors of the number 405,540 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 751, 1502, 2253, 3004, 3755, 4506, 6759, 7510, 9012, 11265, 13518, 15020, 20277, 22530, 27036, 33795, 40554, 45060, 67590, 81108, 101385, 135180, 202770, 405540.

If you add them up, you will get the total of 406,397. Now subtract 405,540 to get 857,820