Q: What is the sum of all factors of the number 1,400 including 1,400?

Why is 3,720 the sum of all factors of 1,400, including 1,400?

The factors of the number 1,400 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400.

If you add them up, you will get the total of 3,720.

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