Q: What is the sum of all factors of the number 51,240 excluding 51,240?

A: 127,320

Why is 127,320 the sum of all factors of 51,240, excluding 51,240?

The factors of the number 51,240 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 420, 427, 488, 610, 732, 840, 854, 915, 1220, 1281, 1464, 1708, 1830, 2135, 2440, 2562, 3416, 3660, 4270, 5124, 6405, 7320, 8540, 10248, 12810, 17080, 25620, 51240.

If you add them up, you will get the total of 51,367. Now subtract 51,240 to get 127,320