Q: What is the sum of all factors of the number 20,820 excluding 20,820?

 A: 37,644

Why is 37,644 the sum of all factors of 20,820, excluding 20,820?

The factors of the number 20,820 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 1041, 1388, 1735, 2082, 3470, 4164, 5205, 6940, 10410, 20820.

If you add them up, you will get the total of 20,857. Now subtract 20,820 to get 37,644


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