Q: What is the sum of all factors of the number 120,420,020 including 120,420,020?

Why is 289,008,384 the sum of all factors of 120,420,020, including 120,420,020?

The factors of the number 120,420,020 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 860143, 1720286, 3440572, 4300715, 6021001, 8601430, 12042002, 17202860, 24084004, 30105005, 60210010, 120420020.

If you add them up, you will get the total of 289,008,384.

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