No they do not, take a big Prime number and compare it to a smaller composite number. The number 6833 as only two factors (divisors), namely 1 and itself. But the number 68 which is much smaller has more factors or divisors. 68 has 2 and 4 and 17 and 1 and itself which is already more divisors than 6833.
31,37 are not composite
well look at the decimals if the first is bigger than its usally bigger the more numbers the smaller it is
Perfect numbers are numbers where all the factors add to that number. For example 6's factors are 1,2, and 3 and 1+2+3=6. Therefore the next perfect number isn't until 28 which is 1,2, 4, 7, 14 where 1+2+4+7+14= 28 An almost perfect number is a number which, when adding all of its proper divisors (all divisors except himself), gives you one less, or one more then the number itlself. Up to now all known almost perfect numbers are 2^n. So to answer your question, the 2 almost perfect numbers between 5 and 20 are 8 and 16. Divisors of 8: 1,2,4 -----> 1+2+4=7 Divisors of 16: 1,2,4,8 -----> 1+2+4+8=15
Not necessarily. 73 has far fewer prime factors than 72.
Not all numbers are either prime or composite. The number 1/2 is neither prime nor composite. If you are referring only to the natural or counting numbers, note that every natural number is equal to the product of itself and 1 so each number has at least one divisor, itself. If it has no more divisors, then it is prime. If it has more than itself as a divisor, then it is composite.
Divisors. Primes are divisible by themselves, and one. Composite numbers also have other divisors.
composite
Well, not necessarily.
31,37 are not composite
Assuming I understand your question, the answer is not necessarily. For example, the factors of 24 are 2, 3, 4, 6, 8, 12, but the only factor of 25 is 5.
All numbers of the from p2 where p is a prime. So 4, 9, 25 and 49. All the rest have fewer or more.
Oh, isn't that a happy little question! The divisors of 543 are the numbers that can divide evenly into it without leaving a remainder. In this case, the divisors of 543 are 1, 3, 181, and 543. Just like in painting, each divisor plays a special role in creating a beautiful masterpiece of numbers.
Yes, all numbers that have 2 in the one's place are composite numbers. In fact, all even numbers except for 2 itself are composite numbers.
A composite number is a positive integer greater than 1 that has more than two distinct positive divisors. In this case, the number 51 is a composite number because it has divisors other than 1 and itself, such as 3 and 17. Numbers 31, 41, and 61 are all prime numbers, as they only have two distinct positive divisors, 1 and the number itself.
Not necessarily. Size and weight are two separate characteristics. Something can be larger in size but weigh less due to differences in density.
149162536496481100121144169196225256289324361400------------The above numbers are squares not perfect numbers. A perfect number n is one that is equal to the proper divisors of n. Here are the first few:628496812833550336858986905613743869132823058430081399521282658455991569831744654692615953842176191561942608236107294793378084303638130997321548169216I don't know if more of them are known. For more information see oeis.org.
yes