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A217532
Numbers k such that sum of 4th power of digits of k equals the sum of prime divisors of k.
1
210, 1210, 2100, 12100, 21000, 21021, 36522, 63141, 89195, 92029, 112132, 116010, 118461, 121000, 149851, 203013, 203202, 210000, 214456, 303142, 304341, 313230, 323723, 331401, 351760, 416213, 441532, 524371, 534656, 574915, 610171, 654560, 897648, 999643
OFFSET
1,1
COMMENTS
Numbers k such that A055013(k) = A008472(k).
EXAMPLE
210 = 2*3*5*7 is in the sequence because 2^4 + 1^4 + 0^4 = 2 + 3 + 5 + 7 = 17.
MATHEMATICA
Rest[Select[Range[1000000], Total[Transpose[FactorInteger[#]][[1]]]==Total[IntegerDigits[#]^4]&]]
CROSSREFS
Sequence in context: A235248 A235241 A046302 * A289319 A157408 A333771
KEYWORD
nonn,easy,base
AUTHOR
Michel Lagneau, Oct 05 2012
STATUS
approved