<script>
function common_divisor_p1(Form_cd_p1){
var cd_L = Form_cd_p1.select_1.value;
var text ='「'+cd_L+'」の公約数は、\n';
for (i=0; i < cd_L; i++){
cd = cd_L - i;
cd_with_rest_L = cd_L/(cd);
cd_check_L = cd_with_rest_L-Math.floor(cd_with_rest_L);
if(cd_check_L == 0){
text=text+cd+'\n';
}
}
alert(text);
}
</script>
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