Q: What is the sum of all factors of the number 1,216,620 excluding 1,216,620?

A: 2,605,044

Why is 2,605,044 the sum of all factors of 1,216,620, excluding 1,216,620?

The factors of the number 1,216,620 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 751, 810, 1502, 1620, 2253, 3004, 3755, 4506, 6759, 7510, 9012, 11265, 13518, 15020, 20277, 22530, 27036, 33795, 40554, 45060, 60831, 67590, 81108, 101385, 121662, 135180, 202770, 243324, 304155, 405540, 608310, 1216620.

If you add them up, you will get the total of 1,216,622. Now subtract 1,216,620 to get 2,605,044