A180936 a(n) is a power of its number of divisors.

1, 2, 9, 625, 6561, 21952, 64000, 117649, 4100625, 25937424601, 23298085122481, 29192926025390625, 59604644775390625, 300283484326400961, 48661191875666868481, 104127350297911241532841

Offset: 1

Author

David W. Wilson, Sep 26 2010

Keywords

• nonn

Examples

			a(5) = 6561 = 9^4 has 9 divisors.
a(12) = 29192926025390625 = 225^7 has 225 divisors.
		

Links

• D. W. Wilson, Table of n, a(n) for n=1..278

Crossrefs

Cf. A000005, A180934, A180935.