To find all the divisors of the number 9,396:
- 1. Decompose the number into prime factors.
- See how you can find out how many factors (divisors) the number has, without actually calculating them.
- 2. Multiply the prime factors in all their unique combinations, that yield different results.
1. Carry out the prime factorization of the number 9,396:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
9,396 = 22 × 34 × 29
9,396 is not a prime number but a composite one.
- Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
- Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
- Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
- Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...
How to count the number of factors of a number?
Without actually finding the factors
- If a number N is prime factorized as:
N = am × bk × cz
where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, .... - ...
- Then the number of factors of the number N can be calculated as:
n = (m + 1) × (k + 1) × (z + 1) - ...
- In our case, the number of factors is calculated as:
- n = (2 + 1) × (4 + 1) × (1 + 1) = 3 × 5 × 2 = 30
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 9,396
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also consider the exponents of these prime factors.
- Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.
All the factors (divisors) are listed below - in ascending order
The list of factors (divisors):
Numbers other than 1 that are not prime factors are composite factors (divisors).
neither prime nor composite =
1
prime factor =
2
prime factor =
3
composite factor = 2
2 =
4
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 3
3 =
27
prime factor =
29
composite factor = 2
2 × 3
2 =
36
composite factor = 2 × 3
3 =
54
composite factor = 2 × 29 =
58
composite factor = 3
4 =
81
composite factor = 3 × 29 =
87
This list continues below...
... This list continues from above
composite factor = 2
2 × 3
3 =
108
composite factor = 2
2 × 29 =
116
composite factor = 2 × 3
4 =
162
composite factor = 2 × 3 × 29 =
174
composite factor = 3
2 × 29 =
261
composite factor = 2
2 × 3
4 =
324
composite factor = 2
2 × 3 × 29 =
348
composite factor = 2 × 3
2 × 29 =
522
composite factor = 3
3 × 29 =
783
composite factor = 2
2 × 3
2 × 29 =
1,044
composite factor = 2 × 3
3 × 29 =
1,566
composite factor = 3
4 × 29 =
2,349
composite factor = 2
2 × 3
3 × 29 =
3,132
composite factor = 2 × 3
4 × 29 =
4,698
composite factor = 2
2 × 3
4 × 29 =
9,396
30 factors (divisors)
What times what is 9,396?
What number multiplied by what number equals 9,396?
All the combinations of any two natural numbers whose product equals 9,396.
1 × 9,396 = 9,396
2 × 4,698 = 9,396
3 × 3,132 = 9,396
4 × 2,349 = 9,396
6 × 1,566 = 9,396
9 × 1,044 = 9,396
12 × 783 = 9,396
18 × 522 = 9,396
27 × 348 = 9,396
29 × 324 = 9,396
36 × 261 = 9,396
54 × 174 = 9,396
58 × 162 = 9,396
81 × 116 = 9,396
87 × 108 = 9,396
15 unique multiplications The final answer:
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