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Search: id:A135100
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| A135100 |
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Numbers which divide their digital sumorial (see A131383). |
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+0
10
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| 1, 3, 4, 15, 26, 2573, 17226, 19786, 22083, 58133, 67693, 223657, 376460, 464713, 497068, 2621204, 4553376, 6000136, 7671158, 13975944, 14074903, 52731198, 82594577
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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a(5)=26, since 26 divides its digital sumorial, which is A131383(26)=182.
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PROGRAM
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(PARI) a=1; for(n=2, 10^6, if(a%(n-1)==0, print1(n-1", ")); x=divisors(n); L=numdiv(n); a+=n; \ for(i=2, L-1, d=x[i]; k=n; while(k%d==0, a-=d-1; k\=d))) - Robert Gerbicz (robert.gerbicz(AT)gmail.com), May 09 2008
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CROSSREFS
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Cf. A007953, A054899, A131383, A131451, A133620, A133900, A134599.
Sequence in context: A081405 A167367 A024858 this_sequence A055486 A041665 A052133
Adjacent sequences: A135097 A135098 A135099 this_sequence A135101 A135102 A135103
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KEYWORD
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nonn,more
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AUTHOR
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Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Dec 24 2007
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EXTENSIONS
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4 more terms from Robert Gerbicz (robert.gerbicz(AT)gmail.com), May 09 2008
a(16)-a(23) from Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jul 31 2008
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