Q: What is the sum of all factors of the number 39,720,620 excluding 39,720,620?

Why is 43,817,380 the sum of all factors of 39,720,620, excluding 39,720,620?

The factors of the number 39,720,620 are: 1, 2, 4, 5, 10, 20, 1019, 1949, 2038, 3898, 4076, 5095, 7796, 9745, 10190, 19490, 20380, 38980, 1986031, 3972062, 7944124, 9930155, 19860310, 39720620.

If you add them up, you will get the total of 39,720,663. Now subtract 39,720,620 to get 43,817,380

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