 
 
 
7.1.5  List of prime factors
The ifactors
command decomposes an integer into prime factors.
- 
ifactors takes
n, an integer or a list of integers.
- ifactors(n) decomposes the integer n (or the integers
of the list) into prime factors, given as a list (or
a list of lists) in which each prime factor is followed by its
multiplicity.
Examples
since 90=21· 32· 51.
 
 
