# Difference between revisions of "2021 AMC 12B Problems/Problem 7"

Sugar rush (talk | contribs) (Created page with "==Problem== Let <math>N = 34 \cdot 34 \cdot 63 \cdot 270</math>. What is the ratio of the sum of the odd divisors of <math>N</math> to the sum of the even divisors of <math>N<...") |
Sugar rush (talk | contribs) |
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<math>\textbf{(A)} ~1 : 16 \qquad\textbf{(B)} ~1 : 15 \qquad\textbf{(C)} ~1 : 14 \qquad\textbf{(D)} ~1 : 8 \qquad\textbf{(E)} ~1 : 3</math> | <math>\textbf{(A)} ~1 : 16 \qquad\textbf{(B)} ~1 : 15 \qquad\textbf{(C)} ~1 : 14 \qquad\textbf{(D)} ~1 : 8 \qquad\textbf{(E)} ~1 : 3</math> | ||

==Solution== | ==Solution== | ||

− | <math>\textbf{(C)} ~1 : 14</math> | + | <math>\boxed{\textbf{(C)} ~1 : 14}</math> |

## Revision as of 18:44, 11 February 2021

## Problem

Let . What is the ratio of the sum of the odd divisors of to the sum of the even divisors of ?

## Solution