Q: What is the sum of all factors of the number 398,440 including 398,440?

Why is 1,025,280 the sum of all factors of 398,440, including 398,440?

The factors of the number 398,440 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1423, 2846, 5692, 7115, 9961, 11384, 14230, 19922, 28460, 39844, 49805, 56920, 79688, 99610, 199220, 398440.

If you add them up, you will get the total of 1,025,280.

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