A217531 Numbers n such that sum of cubes of digits of n equals the sum of prime divisors of n.

142, 402, 5505, 6127, 7305, 12643, 13550, 21033, 21452, 22244, 22290, 22532, 24030, 24936, 25612, 28132, 32040, 35125, 35296, 43053, 47835, 51404, 51703, 52324, 55869, 66003, 69060, 80125, 82464, 86833, 101061, 102240, 103039, 104647, 110334, 110616, 111153

Offset

1,1

Comments

n such that A055012 (n) = A008472(n).

Links

Table of n, a(n) for n=1..37.

Example

402 =  2*3*67  is in the sequence because 4^3 + 0^3 + 2^3 = 2 + 3 + 67 = 72.

Mathematica

Rest[Select[Range[20000], Total[Transpose[FactorInteger[#]][[1]]]==Total[IntegerDigits[#]^3]&]]

Crossrefs

Cf. A055012, A008472, A217390.

Sequence in context: A202279 A035702 A172335 * A158135 A092230 A259422

Adjacent sequences: A217528 A217529 A217530 * A217532 A217533 A217534

Keyword

nonn,easy,base

Author

Michel Lagneau, Oct 05 2012

Status

approved