32 resultados de la búsqueda

11 - On the composition of the Euler function and the sum of divisors function,

Article

Colloquium Mathematicum, Vol. 108, Issue 1, 2007, p. 31--51,
Jean-Marie De Koninck; Florian Luca;

12 - On the difference of arithmetic functions at consecutive arguments,

Incollection

Anatomy of integers, Vol. 46, 2008, p. 179--189, American Mathematical Society, Providence, RI
Jean-Marie De Koninck; Florian Luca;

13 - On the index of composition of the Euler function and of the sum of divisors function,

Article

Journal of the Australian Mathematical Society, Vol. 86, Issue 2, 2009, p. 155--167,
Jean-Marie De Koninck; Florian Luca;

14 - Positive integers divisible by the product of their nonzero digits,

Article

Portugaliae Mathematica (N. S.), Vol. 64, Issue 1, 2007, p. 75--85,
Jean-Marie De Koninck; Florian Luca;

15 - Powerful numbers in short intervals,

Article

Bulletin of the Australian Mathematical Society, Vol. 71, Issue 1, 2005, p. 11--16,
Jean-Marie De Koninck; Florian Luca; Igor E. Shparlinski;

16 - On the difference of values of the kernel function at consecutive integers,

Article

International Journal of Mathematics and Mathematical Sciences, Issue 67, 2003, p. 4249--4262,
Jean-Marie De Koninck; Florian Luca;

17 - The product of exponents in the factorization of consecutive integers,

Article

Mathematika, Vol. 55, Issue 1-2, 2009, p. 59--65,
Jean-Marie De Koninck; Florian Luca;

18 - On strings of consecutive economical numbers of arbitrary length,

Article

Integers, Vol. 5, Issue 2, 2005, p. A5, 5 pp.,
Jean-Marie De Koninck; Florian Luca;

19 - Positive integers n such that sigma(phi(n))=sigma(n),

Article

Journal of Integer Sequences, Vol. 11, Issue 1, 2008, p. Article 08,
Jean-Marie De Koninck; Florian Luca;

20 - Sur la quantité de nombres économiques,

Article

Acta Arithmetica, Vol. 127, Issue 2, 2007, p. 125--143,
Jean-Marie De Koninck; Nicolas Doyon; Florian Luca;

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