To find all the divisors of the number 2,426,130:
- 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 2,426,130:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
2,426,130 = 2 × 32 × 5 × 7 × 3,851
2,426,130 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 = (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 2,426,130
- 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
prime factor =
5
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 5 =
45
composite factor = 3
2 × 7 =
63
composite factor = 2 × 5 × 7 =
70
composite factor = 2 × 3
2 × 5 =
90
composite factor = 3 × 5 × 7 =
105
composite factor = 2 × 3
2 × 7 =
126
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 3
2 × 5 × 7 =
315
composite factor = 2 × 3
2 × 5 × 7 =
630
This list continues below...
... This list continues from above
prime factor =
3,851
composite factor = 2 × 3,851 =
7,702
composite factor = 3 × 3,851 =
11,553
composite factor = 5 × 3,851 =
19,255
composite factor = 2 × 3 × 3,851 =
23,106
composite factor = 7 × 3,851 =
26,957
composite factor = 3
2 × 3,851 =
34,659
composite factor = 2 × 5 × 3,851 =
38,510
composite factor = 2 × 7 × 3,851 =
53,914
composite factor = 3 × 5 × 3,851 =
57,765
composite factor = 2 × 3
2 × 3,851 =
69,318
composite factor = 3 × 7 × 3,851 =
80,871
composite factor = 2 × 3 × 5 × 3,851 =
115,530
composite factor = 5 × 7 × 3,851 =
134,785
composite factor = 2 × 3 × 7 × 3,851 =
161,742
composite factor = 3
2 × 5 × 3,851 =
173,295
composite factor = 3
2 × 7 × 3,851 =
242,613
composite factor = 2 × 5 × 7 × 3,851 =
269,570
composite factor = 2 × 3
2 × 5 × 3,851 =
346,590
composite factor = 3 × 5 × 7 × 3,851 =
404,355
composite factor = 2 × 3
2 × 7 × 3,851 =
485,226
composite factor = 2 × 3 × 5 × 7 × 3,851 =
808,710
composite factor = 3
2 × 5 × 7 × 3,851 =
1,213,065
composite factor = 2 × 3
2 × 5 × 7 × 3,851 =
2,426,130
48 factors (divisors)
What times what is 2,426,130?
What number multiplied by what number equals 2,426,130?
All the combinations of any two natural numbers whose product equals 2,426,130.
1 × 2,426,130 = 2,426,130
2 × 1,213,065 = 2,426,130
3 × 808,710 = 2,426,130
5 × 485,226 = 2,426,130
6 × 404,355 = 2,426,130
7 × 346,590 = 2,426,130
9 × 269,570 = 2,426,130
10 × 242,613 = 2,426,130
14 × 173,295 = 2,426,130
15 × 161,742 = 2,426,130
18 × 134,785 = 2,426,130
21 × 115,530 = 2,426,130
30 × 80,871 = 2,426,130
35 × 69,318 = 2,426,130
42 × 57,765 = 2,426,130
45 × 53,914 = 2,426,130
63 × 38,510 = 2,426,130
70 × 34,659 = 2,426,130
90 × 26,957 = 2,426,130
105 × 23,106 = 2,426,130
126 × 19,255 = 2,426,130
210 × 11,553 = 2,426,130
315 × 7,702 = 2,426,130
630 × 3,851 = 2,426,130
24 unique multiplications The final answer:
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