Q: What is the sum of all factors of the number 161,220 excluding 161,220?

 A: 290,364

Why is 290,364 the sum of all factors of 161,220, excluding 161,220?

The factors of the number 161,220 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 2687, 5374, 8061, 10748, 13435, 16122, 26870, 32244, 40305, 53740, 80610, 161220.

If you add them up, you will get the total of 161,510. Now subtract 161,220 to get 290,364


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