Q: What is the sum of all factors of the number 430,220 excluding 430,220?

 A: 623,140

Why is 623,140 the sum of all factors of 430,220, excluding 430,220?

The factors of the number 430,220 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 439, 490, 878, 980, 1756, 2195, 3073, 4390, 6146, 8780, 12292, 15365, 21511, 30730, 43022, 61460, 86044, 107555, 215110, 430220.

If you add them up, you will get the total of 430,843. Now subtract 430,220 to get 623,140


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