Q: What is the sum of all factors of the number 21,788 excluding 21,788?

A: 19,372

Why is 19,372 the sum of all factors of 21,788, excluding 21,788?

The factors of the number 21,788 are: 1, 2, 4, 13, 26, 52, 419, 838, 1676, 5447, 10894, 21788.

If you add them up, you will get the total of 21,807. Now subtract 21,788 to get 19,372

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