Problem
NT-B1-M09-P008 Odd Divisors of \(720\)
#8
★★☆☆☆ Level 2 of 5
How many odd divisors does \(720\) have?
Remove the factor \(2^4\).
\(720=2^4\cdot3^2\cdot5\). The odd part is \(3^2\cdot5\), so the number of odd divisors is \((2+1)(1+1)=6\).
Short problem on separating the power of two.