Let m=p~an.is odd.Perfect Number gcd(p,n)=1 then p~a is Euler Factor of odd perfect number m The following results have been proved:1)Suppose p mod 5=4 and p mod 7!=1,a=5 6k then p~a is not Euler factor 2) Suppose p mod 5=1 and p mod 7=6,p mod 3=2,a=9 10k then p~a is not Euler factor
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王治文; 闫丽宏.关于C_n∨S_n的点可区别的均匀边染色[J].华东交通大学学报,2006,23(1):137-138. . Euler Factor of Odd Perfect Number[J]. JOURNAL OF EAST CHINA JIAOTONG UNIVERSTTY,2006,23(1):137-138