Proper divisors: Difference between revisions

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=={{header|langur}}==
{{trans|Go}}
<syntaxhighlight lang="langur">val .getproper = ffn(.x) for[=[]] .i of .x \ 2 { if .x div .i: _for ~= [.i] }
val .cntproper = ffn(.x) for[=0] .i of .x \ 2 { if .x div .i: _for += 1 }
 
val .listproper = ffn(.x) {
if .x < 1: return null
for[=""] .i of .x {
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