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The expression 2x3x4x5 can be simplified to 120. The number 120 has the least number of factors because it is a product of consecutive prime numbers (2, 3, and 5). When a number is a product of distinct prime numbers, it will have fewer factors compared to numbers with repeated prime factors. In this case, 120 only has 16 factors, making it the least among numbers with the same number of prime factors.
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What are all lists of the factors of a composite number?
One needs the composite number before he can find its factors. Thus the solution I shall give is ∞.
Give the least possible number that can be rounded off to 25500?
25450 to the nearest hundred.
What are all the factors for the number 55?
The factors of a number are the whole numbers that can be multiplied together to equal that number. The factors of 55 are 1, 5, 11, and 55. This is because 1 x 55 = 55 and 5 x 11 = 55. These are the only combinations of whole numbers that can multiply to give the original number, making them the factors of 55.
Why 81 have an odd number of factors and 40 have an even number of factors?
A number will have an odd number of factors if and only if one of those factors is the square root of the number. This is because any factor of a number you can find must pair up with another factor of that number, and multiply to give the number. The only exception is when the factor would be paired with itself. In other words, be the square root. 81 is a square number, and so the factor 9 (square root of 81) will not pair with any other factor, meaning 81 will have an odd number of factors. 40 has an even number of factors, because it is not a square number, and so all its factors can pair up.
What is the greatest common factor of 180?
It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
