The divisors of a sphenic number therefore are . Furthermore, (where is the Möbius function), (where is the divisor function) and (where and are the number of (nondistinct) prime factors function (http://planetmath.org/NumberOfNondistinctPrimeFactorsFunction) and the number of distinct prime factors function, respectively).
The largest known sphenic number at any time is usually the product of the three largest known Mersenne primes.
|Date of creation||2013-03-22 16:10:33|
|Last modified on||2013-03-22 16:10:33|
|Last modified by||CompositeFan (12809)|