2017 AMC 8 Problems/Problem 19
wertesryrtutyrudtu
Solution 1
Factoring out , we have
, which is
. Next,
has
factors of
. The
is because of all the multiples of
.The
is because of all the multiples of
. Now,
has
factors of
, so there are a total of
factors of
.
~CHECKMATE2021
Video Solution (CREATIVE THINKING + ANALYSIS!!!)
https:/90ijn bidxrfgv