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A086487
Smallest number with n prime divisors such that the sum of the prime divisors is also a divisor, or 0 if no such number exists.
5
2, 0, 30, 1122, 2730, 72930, 870870, 9699690, 340510170, 9592993410, 265257422430, 8624101075590, 304250263527210, 14299762385778870, 1164365758518632670, 43657174563782890110, 1987938667108592728530
OFFSET
1,1
COMMENTS
First member of A086486 with n distinct prime factors. A001221(a(n)) = n; A008472(a(n)) divides a(n). - David Wasserman, Mar 09 2005
EXAMPLE
a(3) = 30. The prime divisors of 30 are 2,3 and 5 and 2+3+5 = 10, divides 30.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Jul 28 2003
EXTENSIONS
More terms from David Wasserman, Mar 09 2005
STATUS
approved