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A104465 a(n) is the least k with n prime factors (counting multiplicity) such that the sum of these n factors divides k. First member of A036844 with n prime factors. 2

%I #3 Mar 31 2012 13:20:57

%S 2,4,27,16,72,240,288,256,2688,3840,4608,13824,30720,61440,73728,

%T 65536,294912,983040,4325376,5898240,11010048,15728640,18874368,

%U 141557760,169869312,654311424,1107296256,1006632960,2818572288,4026531840

%N a(n) is the least k with n prime factors (counting multiplicity) such that the sum of these n factors divides k. First member of A036844 with n prime factors.

%C A001222(a(n)) = n; A001414(a(n)) divides a(n).

%e a(5) = 72 = 2*2*2*3*3; 2+2+2+3+3 = 12 divides 72.

%Y Cf. A001414, A001222, A036844, A086487.

%K nonn,less

%O 1,1

%A _David Wasserman_, Mar 09 2005

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Last modified March 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)