Q: What is the sum of all factors of the number 421,020 including 421,020?

Why is 1,277,640 the sum of all factors of 421,020, including 421,020?

The factors of the number 421,020 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2339, 4678, 7017, 9356, 11695, 14034, 21051, 23390, 28068, 35085, 42102, 46780, 70170, 84204, 105255, 140340, 210510, 421020.

If you add them up, you will get the total of 1,277,640.

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