Q: What is the sum of all factors of the number 663,720 including 663,720?

Why is 1,991,520 the sum of all factors of 663,720, including 663,720?

The factors of the number 663,720 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 5531, 11062, 16593, 22124, 27655, 33186, 44248, 55310, 66372, 82965, 110620, 132744, 165930, 221240, 331860, 663720.

If you add them up, you will get the total of 1,991,520.

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