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Which 2 digit number has exactly 9 factors?
36 has nine factors.
A number that has exactly two factors?
A prime number has exactly two factors.
What number has five factors exactly?
16 (1, 2, 4, 8, and 16) and 81 (1, 3, 9, 27, and 81) each have exactly five factors.
What numbers with exactly 3 factors are?
A number has exactly three factors if and only if it is the square of a prime number.
The number ten has four factors. What is the next number with exactly four factors?
14
When you divide a number exactly by another number the which number become factors of that number?
6 divides 54 exactly to yield 9. Then 6 and 9 are factors of 54.
The number four has three factors What is the next number with exactly three factors?
The number 9: factors are 9, 3, and 1.
Which 2 digit number has exactly 9 factors?
36 has nine factors.
What is the least number that has exactly 9 factors?
100.....1,2,4,5,10,20,25,50,100
Find the next number after 4 that has exactly three factors?
9 The three factors are 1, 3, and 9. 9 The three factors are 1, 3, and 9.
Which number has exactly 10 factors?
Any number of the form a*b^4 where a and b are different prime numbers, or c^9 where c is a prime, will have exactly 10 factors.
What is a whole number greater than 1 that is exactly two factors?
Any composite number. Examples: 4 and 9 . . . (three factors) 6, 8, and 10 . . . (four factors) 12 . . . (six factors) 60 . . . (twelve factors)
What number is less than 40 and has exactly three factors?
4, 9, 25
What is the least natural number that has exactly 4 distinct odd factors?
3*5*7*9 = 945 ...check if any number less than that has exactly four distinct factors.
A number that has exactly two factors?
A prime number has exactly two factors.
What number below 40 has exactly three factors?
Numbers with three factors are squares of primes: 4, 9, 25
Do all square numbers have exactly 3 factors?
No. 81=9*9=3*27=1*81 81 has 5 factors and is a square number. 36=6*6=3*12=1*36=2*18=4*9 36 has 9 factors and is a square number. This doesn't mean that no square numbers have exactly 3 factors though, because: 9=3*3=1*9 9 has 3 factors and is a square number. 4=2*2=1*4 4 has 3 factors and is a square number. All square numbers have an odd number of factors though (because they have a whole number which multiplies by itself to get the number). Factors are whole numbers only, and not decimals. Hope this helps :)
