{"status": "success", "data": {"description_md": "Let $d(n)$ denote the number of positive integers that divide $n$, including $1$ and $n$. For example, $d(1)=1,d(2)=2,$ and $d(12)=6$. (This function is known as the divisor function.) Let$$f(n)=\\frac{d(n)}{\\sqrt [3]n}.$$There is a unique positive integer $N$ such that $f(N)>f(n)$ for all positive integers $n\\ne N$. What is the sum of the digits of $N?$\n\n$\\textbf{(A) }5 \\qquad \\textbf{(B) }6 \\qquad \\textbf{(C) }7 \\qquad \\textbf{(D) }8\\qquad \\textbf{(E) }9$\n___\nFull credit goes to [MAA](https://maa.org/) for authoring these problems. These problems were taken on the [AOPS](https://artofproblemsolving.com/) website.", "description_html": "<p>Let  <span class=\"katex--inline\">d(n)</span>  denote the number of positive integers that divide  <span class=\"katex--inline\">n</span> , including  <span class=\"katex--inline\">1</span>  and  <span class=\"katex--inline\">n</span> . For example,  <span class=\"katex--inline\">d(1)=1,d(2)=2,</span>  and  <span class=\"katex--inline\">d(12)=6</span> . (This function is known as the divisor function.) Let <span class=\"katex--display\">f(n)=\\frac{d(n)}{\\sqrt [3]n}.</span> There is a unique positive integer  <span class=\"katex--inline\">N</span>  such that  <span class=\"katex--inline\">f(N)&gt;f(n)</span>  for all positive integers  <span class=\"katex--inline\">n\\ne N</span> . What is the sum of the digits of  <span class=\"katex--inline\">N?</span> </p>&#10;<p> <span class=\"katex--inline\">\\textbf{(A) }5 \\qquad \\textbf{(B) }6 \\qquad \\textbf{(C) }7 \\qquad \\textbf{(D) }8\\qquad \\textbf{(E) }9</span> </p>&#10;<hr><p>Full credit goes to <a href=\"https://maa.org/\">MAA</a> for authoring these problems. These problems were taken on the <a href=\"https://artofproblemsolving.com/\">AOPS</a> website.</p>", "hints_md": "", "hints_html": "", "editorial_md": "", "editorial_html": "", "flag_hint": "", "point_value": 5, "problem_name": "2021 AMC 12A Problem 25", "can_next": false, "can_prev": true, "nxt": "", "prev": "/problem/21_amc12A_p24"}}