To find all the divisors of the number 1,000,000,970:
- 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 1,000,000,970:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,970 = 2 × 5 × 19 × 997 × 5,279
1,000,000,970 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 1,000,000,970
- 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 =
5
composite factor = 2 × 5 =
10
prime factor =
19
composite factor = 2 × 19 =
38
composite factor = 5 × 19 =
95
composite factor = 2 × 5 × 19 =
190
prime factor =
997
composite factor = 2 × 997 =
1,994
composite factor = 5 × 997 =
4,985
prime factor =
5,279
composite factor = 2 × 5 × 997 =
9,970
composite factor = 2 × 5,279 =
10,558
composite factor = 19 × 997 =
18,943
composite factor = 5 × 5,279 =
26,395
This list continues below...
... This list continues from above
composite factor = 2 × 19 × 997 =
37,886
composite factor = 2 × 5 × 5,279 =
52,790
composite factor = 5 × 19 × 997 =
94,715
composite factor = 19 × 5,279 =
100,301
composite factor = 2 × 5 × 19 × 997 =
189,430
composite factor = 2 × 19 × 5,279 =
200,602
composite factor = 5 × 19 × 5,279 =
501,505
composite factor = 2 × 5 × 19 × 5,279 =
1,003,010
composite factor = 997 × 5,279 =
5,263,163
composite factor = 2 × 997 × 5,279 =
10,526,326
composite factor = 5 × 997 × 5,279 =
26,315,815
composite factor = 2 × 5 × 997 × 5,279 =
52,631,630
composite factor = 19 × 997 × 5,279 =
100,000,097
composite factor = 2 × 19 × 997 × 5,279 =
200,000,194
composite factor = 5 × 19 × 997 × 5,279 =
500,000,485
composite factor = 2 × 5 × 19 × 997 × 5,279 =
1,000,000,970
32 factors (divisors)
What times what is 1,000,000,970?
What number multiplied by what number equals 1,000,000,970?
All the combinations of any two natural numbers whose product equals 1,000,000,970.
1 × 1,000,000,970 = 1,000,000,970
2 × 500,000,485 = 1,000,000,970
5 × 200,000,194 = 1,000,000,970
10 × 100,000,097 = 1,000,000,970
19 × 52,631,630 = 1,000,000,970
38 × 26,315,815 = 1,000,000,970
95 × 10,526,326 = 1,000,000,970
190 × 5,263,163 = 1,000,000,970
997 × 1,003,010 = 1,000,000,970
1,994 × 501,505 = 1,000,000,970
4,985 × 200,602 = 1,000,000,970
5,279 × 189,430 = 1,000,000,970
9,970 × 100,301 = 1,000,000,970
10,558 × 94,715 = 1,000,000,970
18,943 × 52,790 = 1,000,000,970
26,395 × 37,886 = 1,000,000,970
16 unique multiplications The final answer:
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