To find all the divisors of the number 1,000,000,908:
- 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 1,000,000,908:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,908 = 22 × 32 × 1,789 × 15,527
1,000,000,908 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,908
- 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
prime factor =
3
composite factor = 2
2 =
4
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 3
2 =
36
prime factor =
1,789
composite factor = 2 × 1,789 =
3,578
composite factor = 3 × 1,789 =
5,367
composite factor = 2
2 × 1,789 =
7,156
composite factor = 2 × 3 × 1,789 =
10,734
prime factor =
15,527
composite factor = 3
2 × 1,789 =
16,101
composite factor = 2
2 × 3 × 1,789 =
21,468
composite factor = 2 × 15,527 =
31,054
This list continues below...
... This list continues from above
composite factor = 2 × 3
2 × 1,789 =
32,202
composite factor = 3 × 15,527 =
46,581
composite factor = 2
2 × 15,527 =
62,108
composite factor = 2
2 × 3
2 × 1,789 =
64,404
composite factor = 2 × 3 × 15,527 =
93,162
composite factor = 3
2 × 15,527 =
139,743
composite factor = 2
2 × 3 × 15,527 =
186,324
composite factor = 2 × 3
2 × 15,527 =
279,486
composite factor = 2
2 × 3
2 × 15,527 =
558,972
composite factor = 1,789 × 15,527 =
27,777,803
composite factor = 2 × 1,789 × 15,527 =
55,555,606
composite factor = 3 × 1,789 × 15,527 =
83,333,409
composite factor = 2
2 × 1,789 × 15,527 =
111,111,212
composite factor = 2 × 3 × 1,789 × 15,527 =
166,666,818
composite factor = 3
2 × 1,789 × 15,527 =
250,000,227
composite factor = 2
2 × 3 × 1,789 × 15,527 =
333,333,636
composite factor = 2 × 3
2 × 1,789 × 15,527 =
500,000,454
composite factor = 2
2 × 3
2 × 1,789 × 15,527 =
1,000,000,908
36 factors (divisors)
What times what is 1,000,000,908?
What number multiplied by what number equals 1,000,000,908?
All the combinations of any two natural numbers whose product equals 1,000,000,908.
1 × 1,000,000,908 = 1,000,000,908
2 × 500,000,454 = 1,000,000,908
3 × 333,333,636 = 1,000,000,908
4 × 250,000,227 = 1,000,000,908
6 × 166,666,818 = 1,000,000,908
9 × 111,111,212 = 1,000,000,908
12 × 83,333,409 = 1,000,000,908
18 × 55,555,606 = 1,000,000,908
36 × 27,777,803 = 1,000,000,908
1,789 × 558,972 = 1,000,000,908
3,578 × 279,486 = 1,000,000,908
5,367 × 186,324 = 1,000,000,908
7,156 × 139,743 = 1,000,000,908
10,734 × 93,162 = 1,000,000,908
15,527 × 64,404 = 1,000,000,908
16,101 × 62,108 = 1,000,000,908
21,468 × 46,581 = 1,000,000,908
31,054 × 32,202 = 1,000,000,908
18 unique multiplications The final answer:
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