To find all the divisors of the number 1,000,000,880:
- 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 1,000,000,880:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,000,000,880 = 24 × 5 × 109 × 114,679
1,000,000,880 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,000,000,880
- 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
prime factor =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 5 =
80
prime factor =
109
composite factor = 2 × 109 =
218
composite factor = 2
2 × 109 =
436
composite factor = 5 × 109 =
545
composite factor = 2
3 × 109 =
872
composite factor = 2 × 5 × 109 =
1,090
composite factor = 2
4 × 109 =
1,744
composite factor = 2
2 × 5 × 109 =
2,180
composite factor = 2
3 × 5 × 109 =
4,360
composite factor = 2
4 × 5 × 109 =
8,720
This list continues below...
... This list continues from above
prime factor =
114,679
composite factor = 2 × 114,679 =
229,358
composite factor = 2
2 × 114,679 =
458,716
composite factor = 5 × 114,679 =
573,395
composite factor = 2
3 × 114,679 =
917,432
composite factor = 2 × 5 × 114,679 =
1,146,790
composite factor = 2
4 × 114,679 =
1,834,864
composite factor = 2
2 × 5 × 114,679 =
2,293,580
composite factor = 2
3 × 5 × 114,679 =
4,587,160
composite factor = 2
4 × 5 × 114,679 =
9,174,320
composite factor = 109 × 114,679 =
12,500,011
composite factor = 2 × 109 × 114,679 =
25,000,022
composite factor = 2
2 × 109 × 114,679 =
50,000,044
composite factor = 5 × 109 × 114,679 =
62,500,055
composite factor = 2
3 × 109 × 114,679 =
100,000,088
composite factor = 2 × 5 × 109 × 114,679 =
125,000,110
composite factor = 2
4 × 109 × 114,679 =
200,000,176
composite factor = 2
2 × 5 × 109 × 114,679 =
250,000,220
composite factor = 2
3 × 5 × 109 × 114,679 =
500,000,440
composite factor = 2
4 × 5 × 109 × 114,679 =
1,000,000,880
40 factors (divisors)
What times what is 1,000,000,880?
What number multiplied by what number equals 1,000,000,880?
All the combinations of any two natural numbers whose product equals 1,000,000,880.
1 × 1,000,000,880 = 1,000,000,880
2 × 500,000,440 = 1,000,000,880
4 × 250,000,220 = 1,000,000,880
5 × 200,000,176 = 1,000,000,880
8 × 125,000,110 = 1,000,000,880
10 × 100,000,088 = 1,000,000,880
16 × 62,500,055 = 1,000,000,880
20 × 50,000,044 = 1,000,000,880
40 × 25,000,022 = 1,000,000,880
80 × 12,500,011 = 1,000,000,880
109 × 9,174,320 = 1,000,000,880
218 × 4,587,160 = 1,000,000,880
436 × 2,293,580 = 1,000,000,880
545 × 1,834,864 = 1,000,000,880
872 × 1,146,790 = 1,000,000,880
1,090 × 917,432 = 1,000,000,880
1,744 × 573,395 = 1,000,000,880
2,180 × 458,716 = 1,000,000,880
4,360 × 229,358 = 1,000,000,880
8,720 × 114,679 = 1,000,000,880
20 unique multiplications The final answer:
(scroll down)