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Omni-MATH / Let τ(n) be the number of positive divisors of n. Let τ₁(n) be the number of positive divisors of n which have remainders 1 when divided by 3. Find all positive integral values of …

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problem

Let τ(n)\tau(n) be the number of positive divisors of nn. Let τ1(n)\tau_1(n) be the number of positive divisors of nn which have remainders 11 when divided by 33. Find all positive integral values of the fraction τ(10n)τ1(10n)\frac{\tau(10n)}{\tau_1(10n)}.
Plain-text mathematical notation (without MathML)
Let τ(n) be the number of positive divisors of n. Let τ₁(n) be the number of positive divisors of n which have remainders 1 when divided by 3. Find all positive integral values of the fraction (τ(10n))/(τ₁(10n)).
Original LaTeX notation
Let $\tau(n)$ be the number of positive divisors of $n$. Let $\tau_1(n)$ be the number of positive divisors of $n$ which have remainders $1$ when divided by $3$. Find all positive integral values of the fraction $\frac{\tau(10n)}{\tau_1(10n)}$.

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