Q: What is the sum of all factors of the number 78,480 excluding 78,480?

A: 187,500

Why is 187,500 the sum of all factors of 78,480, excluding 78,480?

The factors of the number 78,480 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 109, 120, 144, 180, 218, 240, 327, 360, 436, 545, 654, 720, 872, 981, 1090, 1308, 1635, 1744, 1962, 2180, 2616, 3270, 3924, 4360, 4905, 5232, 6540, 7848, 8720, 9810, 13080, 15696, 19620, 26160, 39240, 78480.

If you add them up, you will get the total of 78,667. Now subtract 78,480 to get 187,500