We discuss some analytic
properties of Dirichlet series Y (s) =∑n=1∞d(n)Δ(n)n−s for Re s > 5∕4, where d(n)
is the divisor function and Δ(x) is the error term in the Dirichlet divisor problem. In
particular, we study an analytic continuation and an order of Y (s). As applications,
we study an analytic continuation and orders of several kinds of Dirichlet series
related to Δ(x).
Keywords
analytic continuation, Dirichlet series, divisor problem,
double zeta function, orders of Dirichlet series