To find all the divisors of the number 1,000,000,899:
- 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 1,000,000,899:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,899 = 32 × 101 × 617 × 1,783
1,000,000,899 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) = 3 × 2 × 2 × 2 = 24
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,899
- 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
composite factor = 3
2 =
9
prime factor =
101
composite factor = 3 × 101 =
303
prime factor =
617
composite factor = 3
2 × 101 =
909
prime factor =
1,783
composite factor = 3 × 617 =
1,851
composite factor = 3 × 1,783 =
5,349
composite factor = 3
2 × 617 =
5,553
composite factor = 3
2 × 1,783 =
16,047
This list continues below...
... This list continues from above
composite factor = 101 × 617 =
62,317
composite factor = 101 × 1,783 =
180,083
composite factor = 3 × 101 × 617 =
186,951
composite factor = 3 × 101 × 1,783 =
540,249
composite factor = 3
2 × 101 × 617 =
560,853
composite factor = 617 × 1,783 =
1,100,111
composite factor = 3
2 × 101 × 1,783 =
1,620,747
composite factor = 3 × 617 × 1,783 =
3,300,333
composite factor = 3
2 × 617 × 1,783 =
9,900,999
composite factor = 101 × 617 × 1,783 =
111,111,211
composite factor = 3 × 101 × 617 × 1,783 =
333,333,633
composite factor = 3
2 × 101 × 617 × 1,783 =
1,000,000,899
24 factors (divisors)
What times what is 1,000,000,899?
What number multiplied by what number equals 1,000,000,899?
All the combinations of any two natural numbers whose product equals 1,000,000,899.
1 × 1,000,000,899 = 1,000,000,899
3 × 333,333,633 = 1,000,000,899
9 × 111,111,211 = 1,000,000,899
101 × 9,900,999 = 1,000,000,899
303 × 3,300,333 = 1,000,000,899
617 × 1,620,747 = 1,000,000,899
909 × 1,100,111 = 1,000,000,899
1,783 × 560,853 = 1,000,000,899
1,851 × 540,249 = 1,000,000,899
5,349 × 186,951 = 1,000,000,899
5,553 × 180,083 = 1,000,000,899
16,047 × 62,317 = 1,000,000,899
12 unique multiplications The final answer:
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