OFFSET
1,3
REFERENCES
József Sándor, Dragoslav S. Mitrinovic and Borislav Crstici, Handbook of Number Theory I, Springer Science & Business Media, 2005, chapter III, page 100.
LINKS
J. Fabrykowski and M. V. Subbarao, The maximal order and the average order of multiplicative function sigma^(e)(n), in Jean M. de Koninck and Claude Levesque (eds.), Théorie des nombres/Number theory: Proceedings of the International Number Theory Conference held at Université Laval, July 5-18, 1987, Berlin, New York: de Gruyter, 1989, pp. 201-206.
Florian Luca and Carl Pomerance, On some problems of Mąkowski-Schinzel and Erdős concerning the arithmetical functions phi and sigma, Colloquium Mathematicum, Vol. 92 (2002), pp. 111-130.
Michel Planat, Riemann hypothesis from the Dedekind psi function, arXiv:1010.3239 [math.GM], 2010.
FORMULA
EXAMPLE
1.0827621932609245801221880381909265701843066555836...
MATHEMATICA
RealDigits[6*Exp[EulerGamma]/Pi^2, 10, 100][[1]]
PROG
(PARI) 6*exp(Euler)/Pi^2 \\ Michel Marcus, May 19 2020
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Amiram Eldar, May 19 2020
STATUS
approved