Q: What is the sum of all factors of the number 72,581,780 excluding 72,581,780?

 A: 85,097,140

Why is 85,097,140 the sum of all factors of 72,581,780, excluding 72,581,780?

The factors of the number 72,581,780 are: 1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 125141, 250282, 500564, 625705, 1251410, 2502820, 3629089, 7258178, 14516356, 18145445, 36290890, 72581780.

If you add them up, you will get the total of 72,581,865. Now subtract 72,581,780 to get 85,097,140


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