1,1

with(numtheory): A029933 := proc(n) local i, j; j := n; for i in divisors(n) do j := j*(1+1/i); od; end;

Cf. A029934.

Sequence in context: A107019 A048133 A135619 this_sequence A128913 A093005 A049818

Adjacent sequences: A029930 A029931 A029932 this_sequence A029934 A029935 A029936

nonn,frac

N. J. A. Sloane (njas(AT)research.att.com).