There are a few numbers that are less than 19 and have more than 4 factors. The number 10 is less than 19 and has more than four factors.
The number is 54. It is greater than 36 and less than 70. One of its factors is 9 and it is an even number.
There are 44 positive integers less than 2,010 that have an odd number of factors.
The most factors any odd number less than 100 has is 6. There are 4 numbers which have 6 factors:45, 63, 75 & 99.
24
There are a few numbers that are less than 19 and have more than 4 factors. The number 10 is less than 19 and has more than four factors.
There are 12 numbers less than 150 which have an odd number of factors: 1,4,9,16,25,36,49,64,81,100,121,144.
the number is 350 the factors is 175 and 2
The number is 54. It is greater than 36 and less than 70. One of its factors is 9 and it is an even number.
There are 44 positive integers less than 2,010 that have an odd number of factors.
That means that the sum of the number's factors, less than the number itself, is less than the number in question - in this case, if you add the factors of 15 (except 15 itself, which is also a factor of 15), you get a total that is less than 15.
12
48
48 has ten factors.
180 has 18 factors.
The smallest number that has exactly three factors is 4.
The most factors any odd number less than 100 has is 6. There are 4 numbers which have 6 factors:45, 63, 75 & 99.