To find all the divisors of the number 1,000,000,768:
- 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 1,000,000,768:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,768 = 28 × 13 × 300,481
1,000,000,768 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 = (8 + 1) × (1 + 1) × (1 + 1) = 9 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,768
- 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
composite factor = 2
3 =
8
prime factor =
13
composite factor = 2
4 =
16
composite factor = 2 × 13 =
26
composite factor = 2
5 =
32
composite factor = 2
2 × 13 =
52
composite factor = 2
6 =
64
composite factor = 2
3 × 13 =
104
composite factor = 2
7 =
128
composite factor = 2
4 × 13 =
208
composite factor = 2
8 =
256
composite factor = 2
5 × 13 =
416
composite factor = 2
6 × 13 =
832
composite factor = 2
7 × 13 =
1,664
composite factor = 2
8 × 13 =
3,328
This list continues below...
... This list continues from above
prime factor =
300,481
composite factor = 2 × 300,481 =
600,962
composite factor = 2
2 × 300,481 =
1,201,924
composite factor = 2
3 × 300,481 =
2,403,848
composite factor = 13 × 300,481 =
3,906,253
composite factor = 2
4 × 300,481 =
4,807,696
composite factor = 2 × 13 × 300,481 =
7,812,506
composite factor = 2
5 × 300,481 =
9,615,392
composite factor = 2
2 × 13 × 300,481 =
15,625,012
composite factor = 2
6 × 300,481 =
19,230,784
composite factor = 2
3 × 13 × 300,481 =
31,250,024
composite factor = 2
7 × 300,481 =
38,461,568
composite factor = 2
4 × 13 × 300,481 =
62,500,048
composite factor = 2
8 × 300,481 =
76,923,136
composite factor = 2
5 × 13 × 300,481 =
125,000,096
composite factor = 2
6 × 13 × 300,481 =
250,000,192
composite factor = 2
7 × 13 × 300,481 =
500,000,384
composite factor = 2
8 × 13 × 300,481 =
1,000,000,768
36 factors (divisors)
What times what is 1,000,000,768?
What number multiplied by what number equals 1,000,000,768?
All the combinations of any two natural numbers whose product equals 1,000,000,768.
1 × 1,000,000,768 = 1,000,000,768
2 × 500,000,384 = 1,000,000,768
4 × 250,000,192 = 1,000,000,768
8 × 125,000,096 = 1,000,000,768
13 × 76,923,136 = 1,000,000,768
16 × 62,500,048 = 1,000,000,768
26 × 38,461,568 = 1,000,000,768
32 × 31,250,024 = 1,000,000,768
52 × 19,230,784 = 1,000,000,768
64 × 15,625,012 = 1,000,000,768
104 × 9,615,392 = 1,000,000,768
128 × 7,812,506 = 1,000,000,768
208 × 4,807,696 = 1,000,000,768
256 × 3,906,253 = 1,000,000,768
416 × 2,403,848 = 1,000,000,768
832 × 1,201,924 = 1,000,000,768
1,664 × 600,962 = 1,000,000,768
3,328 × 300,481 = 1,000,000,768
18 unique multiplications The final answer:
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