20 and 30
All numbers have at least one common factor.
All two digit prime numbers have two factors only, starting with 11, 13, 17, 19.......
Almost all of the two digit composite numbers have two one digit factors that have a sum.
60, 72, 84, 90 and 96 all have 12 factors; tied for the most of two-digit numbers.
11, 22, 36 and 84
11, 22, 36 and 84
Yes, there are two such numbers.
12
22 and 84.
The number one has one factor. Prime numbers have two.
Both 10 and 20 are two-digit numbers that are factors of 20.
1 is the number less than fifty with the fewest number of factors. All other numbers have at least two factors (1, and the integer itself).
Four. They are 14, 21, 28, and 42.
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
25
The number one has one factor. Prime numbers have two.
It is 1 which has only one factor followd by any of the prime numbers which have only two factors
Both 10 and 20 are two-digit numbers that are factors of 20.
72 and 84 have loads of factors.
That would be 1. The only factor of 1 is 1. All other whole numbers have at least two factors. Prime numbers have exactly two factors, while composite numbers have more than two factors.
If you're asking about distinct prime factors, there are eight numbers tied with three of them. If not, 64 has six twos.
1 is the number less than fifty with the fewest number of factors. All other numbers have at least two factors (1, and the integer itself).
There are 21 two-digit prime numbers.
63? But it has more than two one-digit factors.
Four. They are 14, 21, 28, and 42.
The prime factors of 81 are 3, 3, 3, and 3 - so the only two-digit factor is 27, which is 3 x 3 x 3.