Q: What is the sum of all factors of the number 65,880 excluding 65,880?

A: 157,320

Why is 157,320 the sum of all factors of 65,880, excluding 65,880?

The factors of the number 65,880 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 270, 305, 360, 366, 488, 540, 549, 610, 732, 915, 1080, 1098, 1220, 1464, 1647, 1830, 2196, 2440, 2745, 3294, 3660, 4392, 5490, 6588, 7320, 8235, 10980, 13176, 16470, 21960, 32940, 65880.

If you add them up, you will get the total of 66,037. Now subtract 65,880 to get 157,320