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A351369
a(n) = Sum_{p|n, p prime} p * prime(p).
1
0, 6, 15, 6, 55, 21, 119, 6, 15, 61, 341, 21, 533, 125, 70, 6, 1003, 21, 1273, 61, 134, 347, 1909, 21, 55, 539, 15, 125, 3161, 76, 3937, 6, 356, 1009, 174, 21, 5809, 1279, 548, 61, 7339, 140, 8213, 347, 70, 1915, 9917, 21, 119, 61, 1018, 539, 12773, 21, 396, 125, 1288, 3167
OFFSET
1,2
LINKS
EXAMPLE
a(6) = 21; a(6) = Sum_{p|6} p * prime(p) = 2*3 + 3*5 = 21.
MATHEMATICA
Join[{0}, Table[Total[# Prime[#]&/@FactorInteger[n][[;; , 1]]], {n, 2, 80}]] (* Harvey P. Dale, Jan 28 2024 *)
CROSSREFS
Sequence in context: A349083 A205149 A289722 * A070870 A202749 A123623
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 08 2022
STATUS
approved