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, 4, 27, 16, 72, 240, 288, 256, 2688, 3840, 4608, 13824, 30720, 61440, 73728, 65536, 294912, 983040, 4325376, 5898240, 11010048, 15728640, 18874368, 141557760, 169869312, 654311424, 1107296256, 1006632960, 2818572288, 4026531840

Offset: 1

Author

David Wasserman, Mar 09 2005

Keywords

• nonn
• less

Comments

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

Examples

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

Crossrefs

Cf. A001414, A001222, A036844, A086487.