To find all the divisors of the number 3,140,704:
- 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 3,140,704:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
3,140,704 = 25 × 72 × 2,003
3,140,704 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 = (5 + 1) × (2 + 1) × (1 + 1) = 6 × 3 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 3,140,704
- 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
composite factor = 2
2 =
4
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 7 =
28
composite factor = 2
5 =
32
composite factor = 7
2 =
49
composite factor = 2
3 × 7 =
56
composite factor = 2 × 7
2 =
98
composite factor = 2
4 × 7 =
112
composite factor = 2
2 × 7
2 =
196
composite factor = 2
5 × 7 =
224
composite factor = 2
3 × 7
2 =
392
composite factor = 2
4 × 7
2 =
784
composite factor = 2
5 × 7
2 =
1,568
This list continues below...
... This list continues from above
prime factor =
2,003
composite factor = 2 × 2,003 =
4,006
composite factor = 2
2 × 2,003 =
8,012
composite factor = 7 × 2,003 =
14,021
composite factor = 2
3 × 2,003 =
16,024
composite factor = 2 × 7 × 2,003 =
28,042
composite factor = 2
4 × 2,003 =
32,048
composite factor = 2
2 × 7 × 2,003 =
56,084
composite factor = 2
5 × 2,003 =
64,096
composite factor = 7
2 × 2,003 =
98,147
composite factor = 2
3 × 7 × 2,003 =
112,168
composite factor = 2 × 7
2 × 2,003 =
196,294
composite factor = 2
4 × 7 × 2,003 =
224,336
composite factor = 2
2 × 7
2 × 2,003 =
392,588
composite factor = 2
5 × 7 × 2,003 =
448,672
composite factor = 2
3 × 7
2 × 2,003 =
785,176
composite factor = 2
4 × 7
2 × 2,003 =
1,570,352
composite factor = 2
5 × 7
2 × 2,003 =
3,140,704
36 factors (divisors)
What times what is 3,140,704?
What number multiplied by what number equals 3,140,704?
All the combinations of any two natural numbers whose product equals 3,140,704.
1 × 3,140,704 = 3,140,704
2 × 1,570,352 = 3,140,704
4 × 785,176 = 3,140,704
7 × 448,672 = 3,140,704
8 × 392,588 = 3,140,704
14 × 224,336 = 3,140,704
16 × 196,294 = 3,140,704
28 × 112,168 = 3,140,704
32 × 98,147 = 3,140,704
49 × 64,096 = 3,140,704
56 × 56,084 = 3,140,704
98 × 32,048 = 3,140,704
112 × 28,042 = 3,140,704
196 × 16,024 = 3,140,704
224 × 14,021 = 3,140,704
392 × 8,012 = 3,140,704
784 × 4,006 = 3,140,704
1,568 × 2,003 = 3,140,704
18 unique multiplications The final answer:
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