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Search: id:A062519
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| A062519 |
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Numbers for which the (product of the digits) /( sum of the digits) = an integer k > 1. |
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+0
1
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| 36, 44, 63, 66, 88, 138, 145, 154, 159, 167, 176, 183, 189, 195, 198, 224, 235, 242, 246, 253, 257, 264, 268, 275, 279, 286, 297, 318, 325, 333, 345, 347, 352, 354, 357, 369, 374, 375, 381, 396, 415, 422, 426, 435, 437, 448, 451, 453, 456, 459, 462, 465
(list; graph; listen)
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OFFSET
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0,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,1000
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EXAMPLE
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63 is a member as (6*3)/(6+3) = 2 >1.
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PROGRAM
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(PARI) SumD(x)= { s=0; while (x>9, s+=x-10*(x\10); x\=10); return(s + x) } ProdD(x)= { p=1; while (x>9, p*=(x-10*(x\10)); x\=10); return(p*x) } { n=-1; for (m=1, 10^9, p=ProdD(m); s=SumD(m); if(p && p!=s && p%s == 0, write("b062519.txt", n++, " ", m); if (n==1000, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 08 2009]
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CROSSREFS
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Sequence A061013 allows product = sum.
Sequence in context: A044862 A162526 A078299 this_sequence A138566 A062034 A048034
Adjacent sequences: A062516 A062517 A062518 this_sequence A062520 A062521 A062522
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KEYWORD
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nonn,base,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 26 2001
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EXTENSIONS
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Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jun 29 2001
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