具有四个素因子的奇亏完全数On deficient-perfect numbers with four distinct prime divisors
马小艳;王玉杰;
摘要(Abstract)：
设n为自然数,σ(n)表示n的所有正因子和函数.令d是n的真因子,若n满足σ(n)=2n-d,则称n为亏因子为d的亏完全数.本文给出了具有四个素因子的奇亏完全数的一些性质的刻画.
关键词(KeyWords)： 亏完全数;因子和函数;阶
基金项目(Foundation): 国家自然科学基金(11471017)
作者(Authors): 马小艳;王玉杰;
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