A brief experiment in calculating a histogram of file sizes:

$ find -type f -size -128000c -printf "%k\n" \
| sort -n \
| perl -ne 'BEGIN{ %h=(); } 
{chomp $_; $h{$_}++;} 
END { foreach my $k (sort {$h{$a} <=> $h{$b}} keys(%h)) { 
      print "$k $h{$k}\n"; }}'
137 3
145 3
121 3
129 5
113 7
25 10
105 14
97 21
89 29
81 35
73 38
65 60
57 92
49 165
1 221
41 317
33 781
9 4220