Q: What is the sum of all factors of the number 873,420 excluding 873,420?

Why is 1,572,324 the sum of all factors of 873,420, excluding 873,420?

The factors of the number 873,420 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 14557, 29114, 43671, 58228, 72785, 87342, 145570, 174684, 218355, 291140, 436710, 873420.

If you add them up, you will get the total of 873,421. Now subtract 873,420 to get 1,572,324

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