Q: What is the sum of all factors of the number 38,658,009 excluding 38,658,009?

Why is 20,176,935 the sum of all factors of 38,658,009, excluding 38,658,009?

The factors of the number 38,658,009 are: 1, 3, 13, 23, 39, 69, 71, 213, 299, 607, 897, 923, 1633, 1821, 2769, 4899, 7891, 13961, 21229, 23673, 41883, 43097, 63687, 129291, 181493, 544479, 560261, 991231, 1680783, 2973693, 12886003, 38658009.

If you add them up, you will get the total of 38,658,029. Now subtract 38,658,009 to get 20,176,935

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