Multiplicatively perfect numbers: Difference between revisions

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 =Duplicate of task [[Semiprime]]=
+If the product of the divisors of an integer n (including n itself) is equal to n^2, then n is a multiplicatively perfect number.
-Definition
+Equivalently: the product of the proper divisors of n (ie excluding n) is equal to n.
-<br><br>
-If the product of the divisors of an integer n (including n itself) is equal to n^2, then n is a multiplicatively perfect number.<br>
-Equivalently, if the product of the proper divisors of n (ie excluding n) is equal to n.
-<br>
-Task
 <br>
+;Task
 Find and show on this page the multiplicatively perfect numbers below 500
 <br>
 ;See also:
-* The OEIS sequence: &nbsp;[[oeis:A007422|A007422: Multiplicatively perfect numbers]]&nbsp; product of [proper] divisors of j is [j]^2.
+* The OEIS sequence: &nbsp;[[oeis:A007422|A007422: Multiplicatively perfect numbers]]&nbsp;
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