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Does Sage has an inverse totient function command?

I know about euler_phi(n), but is there a command where I can a get a list or some sort of other collection for all those values where n = euler_phi(f(n))?

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Does Sage has an inverse totient function command?

I know about euler_phi(n), but is there a command where I can a get a list or some sort of other collection for all those values where n = euler_phi(f(n))?