Numbers which are the cube roots of the product of their proper divisors: Difference between revisions
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=={{header|Pascal}}== |
=={{header|Pascal}}== |
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==={{header|Free Pascal}}=== |
==={{header|Free Pascal}}=== |
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As stated, the result are the numbers with 8 divisors.Therefor only numbers with prime decomposition of the form:<br> |
As stated, the result are the numbers with 8 = 2^3 divisors.Therefor only numbers with prime decomposition of the form:<br> |
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8 = 2^3 ( all powers+1 must be a power of 2 )<br> |
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a^7 , a^3*b ( a <> b) and a*b*c (a>b>c ( oBdA ) ), of cause all prime<br> |
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Avoid sorting by using an array of limit size for only marking those numbers. |
Avoid sorting by using an array of limit size for only marking those numbers. |
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<syntaxhighlight lang="pascal"> |
<syntaxhighlight lang="pascal"> |
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