Q: What is the sum of all factors of the number 16,920 excluding 16,920?

A: 39,240

Why is 39,240 the sum of all factors of 16,920, excluding 16,920?

The factors of the number 16,920 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 47, 60, 72, 90, 94, 120, 141, 180, 188, 235, 282, 360, 376, 423, 470, 564, 705, 846, 940, 1128, 1410, 1692, 1880, 2115, 2820, 3384, 4230, 5640, 8460, 16920.

If you add them up, you will get the total of 16,959. Now subtract 16,920 to get 39,240