180, with factors 1,2,3,4,5,6,9,10,12,15,18,20,30,36,45,60,90 and 180.
The smallest number is .18
The smallest number that is divisible by 18 and 48 is 144.
11
72 is the second-smallest number with 12 factors. Its divisors are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The smallest number with 12 factors is 60. Its divisors are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.
240 has 20 factors.
18
The smallest number is .18
The smallest number that is divisible by 18 and 48 is 144.
The smallest prime factors are 2,3,5,7 thus the smallest number would be the product of these will be 210
240 is the smallest number with twenty factors.
11
The smallest number that has exactly eight factors is 24. The factors of 1,2,3,4,6,8,12, and 24
72 is the second-smallest number with 12 factors. Its divisors are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The smallest number with 12 factors is 60. Its divisors are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.
Every number has factors. They are endless.
36 = 4 x 9 36 = 18 x 2
36. (Factors are 1, 2, 3, 4, 6, 9, 12, 18 and 36.)
198, or 18 times 11. This is the smallest number that will have 11, 18 and 6 as factors. You don't have to worry much about 6, because any number with a factor of 18 will also have 6 as a factor.