4 results.
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Question in Content created by Newcastle University
Number Theory.
Given n∈N find μ(n),τ(n),σ(n),ϕ(n).
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Question in Content created by Newcastle University
Given ab∈Q for suitable choices of a and b, find all n∈N such that ϕ(n)=abn.
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Question in Content created by Newcastle University
Given m∈N, find values of n∈N such that σ(n)=m.
There are at most two such solutions in this question.
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Question in Content created by Newcastle University
Given m∈N, find all n∈N such that ϕ(n)=m and enter the largest and second largest if they exist.