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A067237 Numbers n such that gcd(sigma(n),n)=n/5. 1

%I

%S 5,10,15,30,60,90,140,420,1170,2480,3360,6200,7440,8190,18600,40640,

%T 114660,121920,131040,297600,997920,2618880,5059200,64995840,72602880,

%U 95472000,102136320,167751680,197308800,433305600,503255040,668304000

%N Numbers n such that gcd(sigma(n),n)=n/5.

%K easy,nonn

%O 1,1

%A _Benoit Cloitre_, Feb 20 2002

%E More terms from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Nov 15 2004

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Last modified October 21 02:29 EDT 2021. Contains 348141 sequences. (Running on oeis4.)