4? the factors of 4 are 1,4 and 2
the answer would seem to be ten.
4, 9 and 25.
4 : with factors 1, 2 and 4
Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).
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I think that it is 4
4? the factors of 4 are 1,4 and 2
The smallest number that has exactly three factors is 4.
The factors of 4 are 1, 2, and 4 .
I belive it is 4. The factors of 4 are 1,4, and 2.
the answer would seem to be ten.
4096 is the smallest number with exactly 13 factors. (Including 1 and itself as factors).192 is the smallest number with exactly 13 properfactors, (excluding the number itself).120 is the smallest number with at least 13 factors (it has 16 factors)To find the smallest number with exactly N factors (for example, N=12):Factor N into primes, (for example, 12= 2*2*3Subtract 1 from each of the prime factors (for example, 1,1,2)Sort them by largest first (for example, 2,1,1)Raise successive prime numbers to these powers (for example, 2^2,3^1,5^1)Multiply these together (for example: 4*3*5 = 60; 60 is the smallest number with exactly 12 factors).
240 is the smallest number with at least 19 factors. 240 has twenty factors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240 262144 is the smallest number with EXACTLY 19 factors
The smallest prime factors are 2,3,5,7 thus the smallest number would be the product of these will be 210
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