Dirichlet Divisor Problem
Let
be the number of
Divisors
of
(including
itself). For a
Prime
,
. In general,
where
is the
Euler-Mascheroni Constant
.
Dirichlet
originally gave
. As of 1988, this had been reduced to
.
See also
Divisor Function
© 1996-9
Eric W. Weisstein
1999-05-24