Q: What is the sum of all factors of the number 77,340 excluding 77,340?

 A: 139,380

Why is 139,380 the sum of all factors of 77,340, excluding 77,340?

The factors of the number 77,340 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1289, 2578, 3867, 5156, 6445, 7734, 12890, 15468, 19335, 25780, 38670, 77340.

If you add them up, you will get the total of 77,479. Now subtract 77,340 to get 139,380


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