Q: What is the sum of all factors of the number 9,975 including 9,975?

 A: 19,840

Why is 19,840 the sum of all factors of 9,975, including 9,975?

The factors of the number 9,975 are: 1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325, 9975.

If you add them up, you will get the total of 19,840.


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