To find all the divisors of the number 300,000,020:
- 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 300,000,020:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
300,000,020 = 22 × 5 × 17 × 31 × 28,463
300,000,020 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 300,000,020
- 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
composite factor = 2 × 5 =
10
prime factor =
17
composite factor = 2
2 × 5 =
20
prime factor =
31
composite factor = 2 × 17 =
34
composite factor = 2 × 31 =
62
composite factor = 2
2 × 17 =
68
composite factor = 5 × 17 =
85
composite factor = 2
2 × 31 =
124
composite factor = 5 × 31 =
155
composite factor = 2 × 5 × 17 =
170
composite factor = 2 × 5 × 31 =
310
composite factor = 2
2 × 5 × 17 =
340
composite factor = 17 × 31 =
527
composite factor = 2
2 × 5 × 31 =
620
composite factor = 2 × 17 × 31 =
1,054
composite factor = 2
2 × 17 × 31 =
2,108
composite factor = 5 × 17 × 31 =
2,635
composite factor = 2 × 5 × 17 × 31 =
5,270
composite factor = 2
2 × 5 × 17 × 31 =
10,540
This list continues below...
... This list continues from above
prime factor =
28,463
composite factor = 2 × 28,463 =
56,926
composite factor = 2
2 × 28,463 =
113,852
composite factor = 5 × 28,463 =
142,315
composite factor = 2 × 5 × 28,463 =
284,630
composite factor = 17 × 28,463 =
483,871
composite factor = 2
2 × 5 × 28,463 =
569,260
composite factor = 31 × 28,463 =
882,353
composite factor = 2 × 17 × 28,463 =
967,742
composite factor = 2 × 31 × 28,463 =
1,764,706
composite factor = 2
2 × 17 × 28,463 =
1,935,484
composite factor = 5 × 17 × 28,463 =
2,419,355
composite factor = 2
2 × 31 × 28,463 =
3,529,412
composite factor = 5 × 31 × 28,463 =
4,411,765
composite factor = 2 × 5 × 17 × 28,463 =
4,838,710
composite factor = 2 × 5 × 31 × 28,463 =
8,823,530
composite factor = 2
2 × 5 × 17 × 28,463 =
9,677,420
composite factor = 17 × 31 × 28,463 =
15,000,001
composite factor = 2
2 × 5 × 31 × 28,463 =
17,647,060
composite factor = 2 × 17 × 31 × 28,463 =
30,000,002
composite factor = 2
2 × 17 × 31 × 28,463 =
60,000,004
composite factor = 5 × 17 × 31 × 28,463 =
75,000,005
composite factor = 2 × 5 × 17 × 31 × 28,463 =
150,000,010
composite factor = 2
2 × 5 × 17 × 31 × 28,463 =
300,000,020
48 factors (divisors)
What times what is 300,000,020?
What number multiplied by what number equals 300,000,020?
All the combinations of any two natural numbers whose product equals 300,000,020.
1 × 300,000,020 = 300,000,020
2 × 150,000,010 = 300,000,020
4 × 75,000,005 = 300,000,020
5 × 60,000,004 = 300,000,020
10 × 30,000,002 = 300,000,020
17 × 17,647,060 = 300,000,020
20 × 15,000,001 = 300,000,020
31 × 9,677,420 = 300,000,020
34 × 8,823,530 = 300,000,020
62 × 4,838,710 = 300,000,020
68 × 4,411,765 = 300,000,020
85 × 3,529,412 = 300,000,020
124 × 2,419,355 = 300,000,020
155 × 1,935,484 = 300,000,020
170 × 1,764,706 = 300,000,020
310 × 967,742 = 300,000,020
340 × 882,353 = 300,000,020
527 × 569,260 = 300,000,020
620 × 483,871 = 300,000,020
1,054 × 284,630 = 300,000,020
2,108 × 142,315 = 300,000,020
2,635 × 113,852 = 300,000,020
5,270 × 56,926 = 300,000,020
10,540 × 28,463 = 300,000,020
24 unique multiplications The final answer:
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