174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
171 is not a prime number. These numbers go evenly into 171: 1 3 9 19 57 171.
54
The numbers 1, 3 and 9 all go into both 72 and 171.
HCF(54, 16) = 2
6 and 9 both go into 54.
54
The number 1.
One.
One.
0.3158
The common factors of 54 and 78 are 1, 2, 3, 6.