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A072363 Composite numbers whose sum of divisors is palindromic. 0

%I

%S 4,81,96,98,130,146,162,166,201,205,208,221,244,274,300,314,325,333,

%T 365,388,422,438,489,519,559,633,685,793,803

%N Composite numbers whose sum of divisors is palindromic.

%e a(2)=81: sum of divisors of 81=1+3+9+27+81=121, which is a palindrome.

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Jul 18 2002

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Last modified July 11 01:51 EDT 2020. Contains 335600 sequences. (Running on oeis4.)