Q: What is the sum of all factors of the number 27,128,465 excluding 27,128,465?

Why is 13,379,695 the sum of all factors of 27,128,465, excluding 27,128,465?

The factors of the number 27,128,465 are: 1, 5, 7, 13, 35, 65, 91, 109, 455, 545, 547, 763, 1417, 2735, 3815, 3829, 7085, 7111, 9919, 19145, 35555, 49595, 49777, 59623, 248885, 298115, 417361, 775099, 2086805, 3875495, 5425693, 27128465.

If you add them up, you will get the total of 27,128,478. Now subtract 27,128,465 to get 13,379,695

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