Why is 42,840 the sum of all factors of 20,380, including 20,380?
The factors of the number 20,380 are: 1, 2, 4, 5, 10, 20, 1019, 2038, 4076, 5095, 10190, 20380.
If you add them up, you will get the total of 42,840.
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