Prime numbers have only a few factors, which are () and ()

The prime number has only two factors, namely (1) and (itself)

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1. The sum of the factors of a prime number is 20. What is the prime number
2. Is 20 a composite number or a prime number? The factors of 20 are ()
3. Judgment: the factor of a prime number is still a prime number. () 2. 20 is a factor of 20 and a multiple of 10 ()
4. All the factors of 36 () where the prime number has () and the composite number has () 26＝（）＋（）＝（）＋（）＝（）＋（） 12 = () + () = () - () = () × () × () fill in the appropriate prime number
5. Among the 36 factors, there are () prime numbers, () composite numbers and () even numbers
6. Which factors of 35, 24, 17, 14, 36, 23 are prime numbers and which are composite numbers?
7. What are the factors of 30 and which are prime numbers?
8. A is a prime number. There are () factors of A
9. Circle plus triangle equals 450, triangle equals circle times 4, circle equals how many, triangle equals how many
10. Circle + triangle = 120 circle = 4 triangles added Circle + triangle = 120 Circle = 4 triangles added How much is a circle? How much is a triangle? (third grade mathematics) What I want is how to explain to children
11. B is prime. How many factors does B have?
12. How many factors do prime numbers have
13. How many factors does a prime number have
14. A number 2a is prime, and a plus 20, a plus 40 are prime. What is a
15. A is prime, a + 40 and a + 80 are prime. What is a?
16. The concept of prime number a plus 40 is prime number a plus 80. What is prime number a equal to? ditto
17. A is a one digit prime. A + 40 and a + 80 are prime. What is a
18. The sum of three primes is 80. What is the maximum product of the three primes?
19. The sum of three different prime numbers is 82, and the product of these three prime factors is ()
20. The sum of three different primes is 82. What is the maximum product of these three primes