List questions from multiplicative-function

Published on 18 Oct 2020 - 20:57

126

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Proving a relation between sum of reciprocal of divisors and $\sigma(n)$

Published on 25 Oct 2020 - 12:32

109

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Multiplicative Functions Proof

Published on 12 Nov 2020 - 18:51

72

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Sum of inverse of a multiplicative function

Published on 25 Mar 2026 - 23:52

424

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RSA: what is $k$ in the formula to calculate $d$?

Published on 24 Dec 2020 - 13:52

245

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Check if an arithmetic function is (completely) multiplicative

Published on 25 Dec 2020 - 11:06

643

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Find the highest natural number which is divisible by $30$ and has exactly $30$ different positive divisors.

Published on 27 Dec 2020 - 16:51

184

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Dirichlet convolution of a multiplicative function with itself

Published on 26 Mar 2026 - 2:53

46

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derivate is based on addition, is there a muliplication analogon?

Published on 19 Feb 2021 - 20:48

84

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The Question about Euler's Totient Function : How phi(ip) = pphi(i)? Here, p is prime and p divides i, phi-> Euler totient function

Published on 24 Feb 2021 - 3:17

709

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Let $f$, $g$ be multiplicative functions, not identically $0$ such that $f(p^k)=g(p^k)$ for each prime $p$ and $k \ge 1$. Prove that $f = g$.

Published on 27 Feb 2021 - 6:55

64

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Group operator vs. complex number multiplication operator in the multiplicative property of a character of a group

Published on 07 Mar 2021 - 11:31

165

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Sum of an arithmetic function over the divisors of an integer is multiplicative

Published on 12 Mar 2021 - 2:06

66

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Prove that $G(n) = \sum_{d|n} \frac{n}{d}\tau(d)$ is multiplicative.

Published on 14 Mar 2021 - 15:23

155

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Euclidean algorithm and Multiplicative inverse in RSA Cryptosystem

Published on 22 Mar 2021 - 22:45

List Question

Any results about auto-correlation function of Mertens function

Proving a relation between sum of reciprocal of divisors and $\sigma(n)$

Multiplicative Functions Proof

Sum of inverse of a multiplicative function

RSA: what is $k$ in the formula to calculate $d$?

Check if an arithmetic function is (completely) multiplicative

Find the highest natural number which is divisible by $30$ and has exactly $30$ different positive divisors.

Dirichlet convolution of a multiplicative function with itself

derivate is based on addition, is there a muliplication analogon?

The Question about Euler's Totient Function : How phi(ip) = pphi(i)? Here, p is prime and p divides i, phi-> Euler totient function

Let $f$, $g$ be multiplicative functions, not identically $0$ such that $f(p^k)=g(p^k)$ for each prime $p$ and $k \ge 1$. Prove that $f = g$.

Group operator vs. complex number multiplication operator in the multiplicative property of a character of a group

Sum of an arithmetic function over the divisors of an integer is multiplicative

Prove that $G(n) = \sum_{d|n} \frac{n}{d}\tau(d)$ is multiplicative.

Euclidean algorithm and Multiplicative inverse in RSA Cryptosystem

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