Q: What is the sum of all factors of the number 1,263,640 including 1,263,640?

Why is 3,250,080 the sum of all factors of 1,263,640, including 1,263,640?

The factors of the number 1,263,640 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4513, 9026, 18052, 22565, 31591, 36104, 45130, 63182, 90260, 126364, 157955, 180520, 252728, 315910, 631820, 1263640.

If you add them up, you will get the total of 3,250,080.

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