Q: What is the sum of all factors of the number 720,240 excluding 720,240?

A: 1,513,248

Why is 1,513,248 the sum of all factors of 720,240, excluding 720,240?

The factors of the number 720,240 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 3001, 6002, 9003, 12004, 15005, 18006, 24008, 30010, 36012, 45015, 48016, 60020, 72024, 90030, 120040, 144048, 180060, 240080, 360120, 720240.

If you add them up, you will get the total of 720,241. Now subtract 720,240 to get 1,513,248