Q: What is the sum of all factors of the number 400,306,660 including 400,306,660?

Why is 905,309,496 the sum of all factors of 400,306,660, including 400,306,660?

The factors of the number 400,306,660 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1539641, 3079282, 6158564, 7698205, 15396410, 20015333, 30792820, 40030666, 80061332, 100076665, 200153330, 400306660.

If you add them up, you will get the total of 905,309,496.

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