Q: What is the sum of all factors of the number 87,240 excluding 87,240?

 A: 174,840

Why is 174,840 the sum of all factors of 87,240, excluding 87,240?

The factors of the number 87,240 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 727, 1454, 2181, 2908, 3635, 4362, 5816, 7270, 8724, 10905, 14540, 17448, 21810, 29080, 43620, 87240.

If you add them up, you will get the total of 87,414. Now subtract 87,240 to get 174,840


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