File: project_euler_021.pl

package info (click to toggle)
libmath-prime-util-perl 0.73-2
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, forky, sid, trixie
  • size: 2,796 kB
  • sloc: perl: 24,676; ansic: 11,471; makefile: 26; python: 24
file content (11 lines) | stat: -rw-r--r-- 225 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
 
#!/usr/bin/env perl
use warnings;
use strict;
use Math::Prime::Util qw/:all/;

my $sum = 0;
foreach my $a (1..10000) {
  my $b = divisor_sum($a)-$a;
  $sum += $a + $b if $b > $a && $a == divisor_sum($b)-$b;
}
print "$sum\n";