Q: What is the sum of all factors of the number 72,720 excluding 72,720?

 A: 173,916

Why is 173,916 the sum of all factors of 72,720, excluding 72,720?

The factors of the number 72,720 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, 101, 120, 144, 180, 202, 240, 303, 360, 404, 505, 606, 720, 808, 909, 1010, 1212, 1515, 1616, 1818, 2020, 2424, 3030, 3636, 4040, 4545, 4848, 6060, 7272, 8080, 9090, 12120, 14544, 18180, 24240, 36360, 72720.

If you add them up, you will get the total of 72,893. Now subtract 72,720 to get 173,916


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