Q: What is the sum of all factors of the number 25,920 excluding 25,920?

A: 66,282

Why is 66,282 the sum of all factors of 25,920, excluding 25,920?

The factors of the number 25,920 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 810, 864, 960, 1080, 1296, 1440, 1620, 1728, 2160, 2592, 2880, 3240, 4320, 5184, 6480, 8640, 12960, 25920.

If you add them up, you will get the total of 25,986. Now subtract 25,920 to get 66,282