  Perturbative series of some quantities in quantum field theories, such as the
pole mass of a quark, suffer from a kind of divergence called renormalon
divergence. In this paper, the leading renormalon in the pole mass is
investigated, and a map is introduced to suppress this renormalon. The inverse
of the map is then used to generate the leading renormalon and obtain an
expression to calculate its overall normalization. Finally, the overall
normalization of the leading renormalon of the pole mass is calculated for
several values of quark flavors.
