Q: What is the sum of all factors of the number 20,880 including 20,880?

A: 72,540

Why is 72,540 the sum of all factors of 20,880, including 20,880?

The factors of the number 20,880 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 1044, 1160, 1305, 1392, 1740, 2088, 2320, 2610, 3480, 4176, 5220, 6960, 10440, 20880.

If you add them up, you will get the total of 72,540.