Q: What is the sum of all factors of the number 420 including 420?

Why is 1,344 the sum of all factors of 420, including 420?

The factors of the number 420 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420.

If you add them up, you will get the total of 1,344.

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