is called an 
-divisor (or exponential divisor) of a number 
with prime factorization
 |
if 
and
 |
where 
for 
. For example, the 
-divisors of 36 are 
, 
, 
, and 
.
e-Divisor
See also
e-Perfect NumberExplore with Wolfram|Alpha
References
Guy, R. K. "Exponential-Perfect Numbers." §B17 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, p. 73, 1994.Straus, E. G. and Subbarao, M. V. "On Exponential Divisors." Duke Math. J. 41, 465-471, 1974.Referenced on Wolfram|Alpha
e-DivisorCite this as:
Weisstein, Eric W. "e-Divisor." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/e-Divisor.html