Why is 3,840 the sum of all factors of 1,995, including 1,995?
The factors of the number 1,995 are: 1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995.
If you add them up, you will get the total of 3,840.
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