In order to study the existence of odd-deficient perfect numbers with five different prime fac-tors,the problem whether odd positive integer n with five different prime factors satisfy the definition of the odd deficient perfect number is discussed by using the elementary method.Several conclusions indica-ting that there are three classes of odd positive integers n with five different prime factors are not odd defi-cient perfect number.
关键词
亏完全数/奇亏完全数/存在性/数论函数
Key words
deficient-perfect number/odd deficient perfect number/existence/arithmetical function
维普
万方数据