login
phi(n) is equal to the product of the dual prime-power components of n.
0

%I #7 Feb 24 2021 22:51:10

%S 1,2,12,48,5832

%N phi(n) is equal to the product of the dual prime-power components of n.

%e phi(5832)=1944, 5832=2^3*3^6, (3^2)*(6^3)=1944.

%Y Cf. A000010, A008477.

%K nonn

%O 1,2

%A _Olivier GĂ©rard_

%E No others < 7*10^7. - _Naohiro Nomoto_, Jun 23 2001