Ruth-Aaron numbers: Difference between revisions

=={{header|Perl}}==

<lang perl>#!/usr/bin/perl

use strict;

use warnings;

use ntheory qw( factor vecsum );

use List::AllUtils qw( uniq );

#use Data::Dump 'dd'; dd factor(6); exit;

my $n = 1;

my @answers;

while( @answers < 30 )

{

vecsum(factor($n)) == vecsum(factor($n+1)) and push @answers, $n;

$n++;

}

print "factors:\n\n@answers\n\n" =~ s/.{60}\K /\n/gr;

$n = 1;

@answers = ();

while( @answers < 30 )

{

vecsum(uniq factor($n)) == vecsum(uniq factor($n+1)) and push @answers, $n;

$n++;

}

print "divisors:\n\n@answers\n" =~ s/.{60}\K /\n/gr;</lang>

{{out}}

<pre>

factors:

5 8 15 77 125 714 948 1330 1520 1862 2491 3248 4185 4191 5405

5560 5959 6867 8280 8463 10647 12351 14587 16932 17080 18490

20450 24895 26642 26649

divisors:

5 24 49 77 104 153 369 492 714 1682 2107 2299 2600 2783 5405

6556 6811 8855 9800 12726 13775 18655 21183 24024 24432 24880

25839 26642 35456 40081

</pre>