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Special highly composite numbers: a highly composite number (A002182) that divides all larger highly composite numbers.
12

%I #8 Jun 16 2015 19:14:27

%S 1,2,6,12,60,2520

%N Special highly composite numbers: a highly composite number (A002182) that divides all larger highly composite numbers.

%D J. L. Nicolas, On highly composite numbers, pp. 215-244 in Ramanujan Revisited, Editors G. E. Andrews et al., Academic Press 1988.

%H S. Ratering, <a href="http://www.jstor.org/stable/2690653">An interesting subset of the highly composite numbers</a>, Math. Mag., 64 (1991), 343-346.

%Y Cf. A002182, A002201, A000005.

%Y Cf. A072938.

%K nonn,fini,full

%O 1,2

%A _N. J. A. Sloane_, May 27 2005