To find all the divisors of the number 6,343,820:
- 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 6,343,820:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
6,343,820 = 22 × 5 × 7 × 113 × 401
6,343,820 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) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 6,343,820
- 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 =
5
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 2
2 × 5 =
20
composite factor = 2
2 × 7 =
28
composite factor = 5 × 7 =
35
composite factor = 2 × 5 × 7 =
70
prime factor =
113
composite factor = 2
2 × 5 × 7 =
140
composite factor = 2 × 113 =
226
prime factor =
401
composite factor = 2
2 × 113 =
452
composite factor = 5 × 113 =
565
composite factor = 7 × 113 =
791
composite factor = 2 × 401 =
802
composite factor = 2 × 5 × 113 =
1,130
composite factor = 2 × 7 × 113 =
1,582
composite factor = 2
2 × 401 =
1,604
composite factor = 5 × 401 =
2,005
composite factor = 2
2 × 5 × 113 =
2,260
This list continues below...
... This list continues from above
composite factor = 7 × 401 =
2,807
composite factor = 2
2 × 7 × 113 =
3,164
composite factor = 5 × 7 × 113 =
3,955
composite factor = 2 × 5 × 401 =
4,010
composite factor = 2 × 7 × 401 =
5,614
composite factor = 2 × 5 × 7 × 113 =
7,910
composite factor = 2
2 × 5 × 401 =
8,020
composite factor = 2
2 × 7 × 401 =
11,228
composite factor = 5 × 7 × 401 =
14,035
composite factor = 2
2 × 5 × 7 × 113 =
15,820
composite factor = 2 × 5 × 7 × 401 =
28,070
composite factor = 113 × 401 =
45,313
composite factor = 2
2 × 5 × 7 × 401 =
56,140
composite factor = 2 × 113 × 401 =
90,626
composite factor = 2
2 × 113 × 401 =
181,252
composite factor = 5 × 113 × 401 =
226,565
composite factor = 7 × 113 × 401 =
317,191
composite factor = 2 × 5 × 113 × 401 =
453,130
composite factor = 2 × 7 × 113 × 401 =
634,382
composite factor = 2
2 × 5 × 113 × 401 =
906,260
composite factor = 2
2 × 7 × 113 × 401 =
1,268,764
composite factor = 5 × 7 × 113 × 401 =
1,585,955
composite factor = 2 × 5 × 7 × 113 × 401 =
3,171,910
composite factor = 2
2 × 5 × 7 × 113 × 401 =
6,343,820
48 factors (divisors)
What times what is 6,343,820?
What number multiplied by what number equals 6,343,820?
All the combinations of any two natural numbers whose product equals 6,343,820.
1 × 6,343,820 = 6,343,820
2 × 3,171,910 = 6,343,820
4 × 1,585,955 = 6,343,820
5 × 1,268,764 = 6,343,820
7 × 906,260 = 6,343,820
10 × 634,382 = 6,343,820
14 × 453,130 = 6,343,820
20 × 317,191 = 6,343,820
28 × 226,565 = 6,343,820
35 × 181,252 = 6,343,820
70 × 90,626 = 6,343,820
113 × 56,140 = 6,343,820
140 × 45,313 = 6,343,820
226 × 28,070 = 6,343,820
401 × 15,820 = 6,343,820
452 × 14,035 = 6,343,820
565 × 11,228 = 6,343,820
791 × 8,020 = 6,343,820
802 × 7,910 = 6,343,820
1,130 × 5,614 = 6,343,820
1,582 × 4,010 = 6,343,820
1,604 × 3,955 = 6,343,820
2,005 × 3,164 = 6,343,820
2,260 × 2,807 = 6,343,820
24 unique multiplications The final answer:
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