how many of the positive factors of 45 , 16 and how many common factors are there in numbers ?
"factors of 45 - 1 , 3 , 9 , 15 and 45 factors of 16 - 1 , 2 , 4 , 8 and 16 comparing both , we have three common factors of 45,16 - 1 answer ( a )"
divide(16, 45)