The smallest number with 16 factors is Andrew's Mom.
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.
To find the smallest number that has 1, 2, 3, 4 and 5 as factors, you're looking for the least common multiple, or LCM, of those numbers. You can find that by listing the multiples of each number but it's faster to combine their prime factors. You need two twos, a three and a five. 2 x 2 x 3 x 5 = 60
6
5
24,691 is the smallest. 24,691 - 1 = 24,690. 24,690 has factors of 12345 (*2) and 6 (*4,115).
It is 31.
120
1,243
1243
12345
12345 but if you can use a decimal, then 0.1234 would be the smallest possible number.
The smallest number with 16 factors is Andrew's Mom.
The smallest prime factors are 2,3,5,7 thus the smallest number would be the product of these will be 210
11
240 is the smallest number with twenty factors.