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THE NUMBER OF DISTINCT PRIME FACTORS OF N FOR WHICH SIGMA (N) = 2N, SIGMA (N) = 2N+1 OR 2N-1, AND PHI(N) DIVIDES N-1.
THE NUMBER OF DISTINCT PRIME FACTORS OF N FOR WHICH SIGMA (N) = 2N, SIGMA (N) = 2N+1 OR 2N-1, AND PHI(N) DIVIDES N-1.KISHORE, MASAO.
Princeton University ProQuest Dissertations & Theses, 1977. 7800284.





