To find all the divisors of the number 1,000,000,744:
- 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 1,000,000,744:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,744 = 23 × 383 × 389 × 839
1,000,000,744 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 1,000,000,744
- 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 =
383
prime factor =
389
composite factor = 2 × 383 =
766
composite factor = 2 × 389 =
778
prime factor =
839
composite factor = 2
2 × 383 =
1,532
composite factor = 2
2 × 389 =
1,556
composite factor = 2 × 839 =
1,678
composite factor = 2
3 × 383 =
3,064
composite factor = 2
3 × 389 =
3,112
composite factor = 2
2 × 839 =
3,356
composite factor = 2
3 × 839 =
6,712
This list continues below...
... This list continues from above
composite factor = 383 × 389 =
148,987
composite factor = 2 × 383 × 389 =
297,974
composite factor = 383 × 839 =
321,337
composite factor = 389 × 839 =
326,371
composite factor = 2
2 × 383 × 389 =
595,948
composite factor = 2 × 383 × 839 =
642,674
composite factor = 2 × 389 × 839 =
652,742
composite factor = 2
3 × 383 × 389 =
1,191,896
composite factor = 2
2 × 383 × 839 =
1,285,348
composite factor = 2
2 × 389 × 839 =
1,305,484
composite factor = 2
3 × 383 × 839 =
2,570,696
composite factor = 2
3 × 389 × 839 =
2,610,968
composite factor = 383 × 389 × 839 =
125,000,093
composite factor = 2 × 383 × 389 × 839 =
250,000,186
composite factor = 2
2 × 383 × 389 × 839 =
500,000,372
composite factor = 2
3 × 383 × 389 × 839 =
1,000,000,744
32 factors (divisors)
What times what is 1,000,000,744?
What number multiplied by what number equals 1,000,000,744?
All the combinations of any two natural numbers whose product equals 1,000,000,744.
1 × 1,000,000,744 = 1,000,000,744
2 × 500,000,372 = 1,000,000,744
4 × 250,000,186 = 1,000,000,744
8 × 125,000,093 = 1,000,000,744
383 × 2,610,968 = 1,000,000,744
389 × 2,570,696 = 1,000,000,744
766 × 1,305,484 = 1,000,000,744
778 × 1,285,348 = 1,000,000,744
839 × 1,191,896 = 1,000,000,744
1,532 × 652,742 = 1,000,000,744
1,556 × 642,674 = 1,000,000,744
1,678 × 595,948 = 1,000,000,744
3,064 × 326,371 = 1,000,000,744
3,112 × 321,337 = 1,000,000,744
3,356 × 297,974 = 1,000,000,744
6,712 × 148,987 = 1,000,000,744
16 unique multiplications The final answer:
(scroll down)