Q: What is the sum of all factors of the number 81,005,001 excluding 81,005,001?

 A: 54,497,847

Why is 54,497,847 the sum of all factors of 81,005,001, excluding 81,005,001?

The factors of the number 81,005,001 are: 1, 3, 7, 11, 21, 33, 77, 173, 231, 519, 1211, 1903, 2027, 3633, 5709, 6081, 13321, 14189, 22297, 39963, 42567, 66891, 156079, 350671, 468237, 1052013, 2454697, 3857381, 7364091, 11572143, 27001667, 81005001.

If you add them up, you will get the total of 81,005,055. Now subtract 81,005,001 to get 54,497,847


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