2, 3, 5, 6, 9, 10, 15, 18, 30, 45
60, 72, 84, 90 and 96 are the numbers up to and including 100 that have ten proper factors
60, 72, 84, 90 and 96
Factors of 90 will be factors of 180.
The factors of 90 are:1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90The factors of 365 are:1, 5, 73, 365The common factors are:1, 5
90 has more than six factors.
No. Some proper factors are prime.
9: 1,3.9 90: 1,2,3,5,6,9,10,15,18,30,45,90 81: 1,3,9,27,81
The common factors of 45 and 90 are 1,3,5
No, no prime number has proper factors.
1 doesn't have proper factors.
One has no proper factors.
19 and 90 have no common prime factors.