(1.School of Mathematics and Statistics， Kashi University， Kashi 844000， Xinjiang， China；2.Research Center of Modern Mathematics and Its Application， Kashi， 844000， Xinjiang， China)
Abstract：If a positive integer n satisfied σ(n)＝2n－d， then n is called a deficient-perfect number with deficient divisor d， where d is a divisor of n. The deficient-perfect numbers with deficient divisor d have been highly noticed by the researchers of number theory. The problem that whether an odd positive integer n with six distinct odd prime factors is odd deficient-perfect number is discussed， and some characterizations on its property are given based on the elementary method.
2023, Vol. 57 
