The complement of the maximum δ-divisor graph with new results in δ-divisor graph

Throughout this work, the new results of δ-divisor graph are presented. These results are the number of pendant vertices, the clique number, and the chromatic number. Moreover, many properties in the complement of the maximum δ - divisor graph are discussed, like Hamiltonian and semi-Hamiltonian, Gauss's function, the clique number, and the number of pendant vertices.