To find all the divisors of the number 1,200,000,030:
- 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 1,200,000,030:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,200,000,030 = 2 × 3 × 5 × 53 × 754,717
1,200,000,030 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) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,200,000,030
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- 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
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
composite factor = 2 × 3 × 5 =
30
prime factor =
53
composite factor = 2 × 53 =
106
composite factor = 3 × 53 =
159
composite factor = 5 × 53 =
265
composite factor = 2 × 3 × 53 =
318
composite factor = 2 × 5 × 53 =
530
composite factor = 3 × 5 × 53 =
795
composite factor = 2 × 3 × 5 × 53 =
1,590
This list continues below...
... This list continues from above
prime factor =
754,717
composite factor = 2 × 754,717 =
1,509,434
composite factor = 3 × 754,717 =
2,264,151
composite factor = 5 × 754,717 =
3,773,585
composite factor = 2 × 3 × 754,717 =
4,528,302
composite factor = 2 × 5 × 754,717 =
7,547,170
composite factor = 3 × 5 × 754,717 =
11,320,755
composite factor = 2 × 3 × 5 × 754,717 =
22,641,510
composite factor = 53 × 754,717 =
40,000,001
composite factor = 2 × 53 × 754,717 =
80,000,002
composite factor = 3 × 53 × 754,717 =
120,000,003
composite factor = 5 × 53 × 754,717 =
200,000,005
composite factor = 2 × 3 × 53 × 754,717 =
240,000,006
composite factor = 2 × 5 × 53 × 754,717 =
400,000,010
composite factor = 3 × 5 × 53 × 754,717 =
600,000,015
composite factor = 2 × 3 × 5 × 53 × 754,717 =
1,200,000,030
32 factors (divisors)
What times what is 1,200,000,030?
What number multiplied by what number equals 1,200,000,030?
All the combinations of any two natural numbers whose product equals 1,200,000,030.
1 × 1,200,000,030 = 1,200,000,030
2 × 600,000,015 = 1,200,000,030
3 × 400,000,010 = 1,200,000,030
5 × 240,000,006 = 1,200,000,030
6 × 200,000,005 = 1,200,000,030
10 × 120,000,003 = 1,200,000,030
15 × 80,000,002 = 1,200,000,030
30 × 40,000,001 = 1,200,000,030
53 × 22,641,510 = 1,200,000,030
106 × 11,320,755 = 1,200,000,030
159 × 7,547,170 = 1,200,000,030
265 × 4,528,302 = 1,200,000,030
318 × 3,773,585 = 1,200,000,030
530 × 2,264,151 = 1,200,000,030
795 × 1,509,434 = 1,200,000,030
1,590 × 754,717 = 1,200,000,030
16 unique multiplications The final answer:
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