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  <title>Abundant numbers in a range</title>
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  <h1>Abundant numbers between 1 and 50</h1>
  <p>Uses the simple loop to <code>Math.floor(n/2)</code>. Change the bounds in the script if you like.</p>
  <pre id=out></pre>
  <script>!function(){function n(n){if(n<=1)return!1;for(var t=0,e=n/2|0,r=1;r<=e;r++)n%r==0&&(t+=r);return t>n}for(var t=[],e=1;e<=50;e++)n(e)&&t.push(String(e));document.getElementById("out").textContent="Abundant numbers between 1 and 50 are: "+t.join(" ")}()</script>
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JavaScript Abundant Number — Range 1–50 (Try It)