Q: What is the sum of all factors of the number 12,840 including 12,840?

 A: 38,880

Why is 38,880 the sum of all factors of 12,840, including 12,840?

The factors of the number 12,840 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 2140, 2568, 3210, 4280, 6420, 12840.

If you add them up, you will get the total of 38,880.


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