Q: What is the sum of all factors of the number 556,420 excluding 556,420?

 A: 641,084

Why is 641,084 the sum of all factors of 556,420, excluding 556,420?

The factors of the number 556,420 are: 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 647, 860, 1294, 2588, 3235, 6470, 12940, 27821, 55642, 111284, 139105, 278210, 556420.

If you add them up, you will get the total of 557,061. Now subtract 556,420 to get 641,084


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