Perfect numbers: Difference between revisions
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The first 5 perfect numbers are :
6 28 496 8128 33550336
</pre>
=={{header|Frink}}==
<lang frink>isPerfect = {|n| sum[allFactors[n, true, false]] == n}
select[1 to 1000, isPerfect]</lang>
{{out}}
<pre>[1, 6, 28, 496]
</pre>
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