A074750 - OEIS

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A074750

Numbers k such that (largest prime dividing k) = (number of anti-divisors of k).

%I #12 Aug 03 2022 04:25:28

%S 8,16,25,48,54,63,64,75,80,90,125,126,140,147,160,210,216,240,245,250,

%T 252,275,294,300,320,325,343,350,384,504,560,585,672,700,715,819,847,

%U 891,896,1001,1176,1210,1232,1280,1292,1452,1530,1573,1650,1680,1785

%N Numbers k such that (largest prime dividing k) = (number of anti-divisors of k).

%C See A066272 for definition of anti-divisor.

%Y Cf. A006530, A066272.

%K nonn

%O 1,1

%A _Jason Earls_, Sep 06 2002