To find all the divisors of the number 3,000,000,915:
- 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 3,000,000,915:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
3,000,000,915 = 33 × 5 × 19 × 1,169,591
3,000,000,915 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 = (3 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 4 × 2 × 2 × 2 = 32
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 3,000,000,915
- 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 =
3
prime factor =
5
composite factor = 3
2 =
9
composite factor = 3 × 5 =
15
prime factor =
19
composite factor = 3
3 =
27
composite factor = 3
2 × 5 =
45
composite factor = 3 × 19 =
57
composite factor = 5 × 19 =
95
composite factor = 3
3 × 5 =
135
composite factor = 3
2 × 19 =
171
composite factor = 3 × 5 × 19 =
285
composite factor = 3
3 × 19 =
513
composite factor = 3
2 × 5 × 19 =
855
composite factor = 3
3 × 5 × 19 =
2,565
This list continues below...
... This list continues from above
prime factor =
1,169,591
composite factor = 3 × 1,169,591 =
3,508,773
composite factor = 5 × 1,169,591 =
5,847,955
composite factor = 3
2 × 1,169,591 =
10,526,319
composite factor = 3 × 5 × 1,169,591 =
17,543,865
composite factor = 19 × 1,169,591 =
22,222,229
composite factor = 3
3 × 1,169,591 =
31,578,957
composite factor = 3
2 × 5 × 1,169,591 =
52,631,595
composite factor = 3 × 19 × 1,169,591 =
66,666,687
composite factor = 5 × 19 × 1,169,591 =
111,111,145
composite factor = 3
3 × 5 × 1,169,591 =
157,894,785
composite factor = 3
2 × 19 × 1,169,591 =
200,000,061
composite factor = 3 × 5 × 19 × 1,169,591 =
333,333,435
composite factor = 3
3 × 19 × 1,169,591 =
600,000,183
composite factor = 3
2 × 5 × 19 × 1,169,591 =
1,000,000,305
composite factor = 3
3 × 5 × 19 × 1,169,591 =
3,000,000,915
32 factors (divisors)
What times what is 3,000,000,915?
What number multiplied by what number equals 3,000,000,915?
All the combinations of any two natural numbers whose product equals 3,000,000,915.
1 × 3,000,000,915 = 3,000,000,915
3 × 1,000,000,305 = 3,000,000,915
5 × 600,000,183 = 3,000,000,915
9 × 333,333,435 = 3,000,000,915
15 × 200,000,061 = 3,000,000,915
19 × 157,894,785 = 3,000,000,915
27 × 111,111,145 = 3,000,000,915
45 × 66,666,687 = 3,000,000,915
57 × 52,631,595 = 3,000,000,915
95 × 31,578,957 = 3,000,000,915
135 × 22,222,229 = 3,000,000,915
171 × 17,543,865 = 3,000,000,915
285 × 10,526,319 = 3,000,000,915
513 × 5,847,955 = 3,000,000,915
855 × 3,508,773 = 3,000,000,915
2,565 × 1,169,591 = 3,000,000,915
16 unique multiplications The final answer:
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