Q: What is the sum of all factors of the number 40,121,220 excluding 40,121,220?

Why is 72,218,364 the sum of all factors of 40,121,220, excluding 40,121,220?

The factors of the number 40,121,220 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 668687, 1337374, 2006061, 2674748, 3343435, 4012122, 6686870, 8024244, 10030305, 13373740, 20060610, 40121220.

If you add them up, you will get the total of 40,121,292. Now subtract 40,121,220 to get 72,218,364

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