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A187942
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Numbers n of the form (product of divisors of k)/(sum of divisors of k) for some k.
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0
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1, 3, 392, 11250, 131769, 501126, 15780962, 131079601, 1568294784, 30261936128, 2966827112704, 119439360000000, 238660389865072, 6566468639062500, 39226324511250000, 73141605808805632, 162778775259375000, 282080144308712092
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OFFSET
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1,2
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LINKS
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PROG
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(PARI) A007955(n)=if(issquare(n, &n), n^numdiv(n^2), n^(numdiv(n)/2))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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