A Connection between Pythagorean Triangle and Harshad numbers

Abstract

This paper concerns with the problem of obtaining many Pythagorean triangles where, in each Pythagorean triangle, the expression Leg a H Perimeter Area * 2   is represented by a Harshadd number, Multiple Harshad number and Nivenmorphic number respectively. Also, we present the number of primitive and non-primitive Pythagorean triangles.