# Positive integers $n$ such that $\sigma \left(\varphi \right(n\left)\right)=\sigma \left(n\right)$.

De Koninck, Jean-Marie; Luca, Florian

Journal of Integer Sequences [electronic only] (2008)

- Volume: 11, Issue: 1, page Article 08.1.5, 14 p., electronic only-Article 08.1.5, 14 p., electronic only
- ISSN: 1530-7638

## Access Full Article

top## How to cite

topDe Koninck, Jean-Marie, and Luca, Florian. "Positive integers such that .." Journal of Integer Sequences [electronic only] 11.1 (2008): Article 08.1.5, 14 p., electronic only-Article 08.1.5, 14 p., electronic only. <http://eudml.org/doc/45182>.

@article{DeKoninck2008,

author = {De Koninck, Jean-Marie, Luca, Florian},

journal = {Journal of Integer Sequences [electronic only]},

keywords = {Euler's function; sum of divisors},

language = {eng},

number = {1},

pages = {Article 08.1.5, 14 p., electronic only-Article 08.1.5, 14 p., electronic only},

publisher = {School of Computer Science, University of Waterloo, Waterloo},

title = {Positive integers such that .},

url = {http://eudml.org/doc/45182},

volume = {11},

year = {2008},

}

TY - JOUR

AU - De Koninck, Jean-Marie

AU - Luca, Florian

TI - Positive integers such that .

JO - Journal of Integer Sequences [electronic only]

PY - 2008

PB - School of Computer Science, University of Waterloo, Waterloo

VL - 11

IS - 1

SP - Article 08.1.5, 14 p., electronic only

EP - Article 08.1.5, 14 p., electronic only

LA - eng

KW - Euler's function; sum of divisors

UR - http://eudml.org/doc/45182

ER -

## NotesEmbed ?

topTo embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.