Q: What is the sum of all factors of the number 15,960 excluding 15,960?

A: 41,640

Why is 41,640 the sum of all factors of 15,960, excluding 15,960?

The factors of the number 15,960 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3990, 5320, 7980, 15960.

If you add them up, you will get the total of 16,001. Now subtract 15,960 to get 41,640