N has total 105 factors including 1 and N. then find :

a) the total no of odd factors between 1 and N.

b) if the total number of divisors of N which are multiple of 36 are 45.then the total no of odd factors between 1 and N.

c)the number of ways in which N can be resolved into 2 factors which are relatively prime to each other is equal to 4,then the total no of odd factors between 1 and N.

d) if the total number of divisors of N which are multiple of 216 are 48,then the total no of odd factors between 1 and N.

(may have more than one answers in all the parts)