To find all the divisors of the number 111,000:
- 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 111,000:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
111,000 = 23 × 3 × 53 × 37
111,000 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) × (3 + 1) × (1 + 1) = 4 × 2 × 4 × 2 = 64
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 111,000
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 3 =
24
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
prime factor =
37
composite factor = 2
3 × 5 =
40
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 37 =
74
composite factor = 3 × 5
2 =
75
composite factor = 2
2 × 5
2 =
100
composite factor = 3 × 37 =
111
composite factor = 2
3 × 3 × 5 =
120
composite factor = 5
3 =
125
composite factor = 2
2 × 37 =
148
composite factor = 2 × 3 × 5
2 =
150
composite factor = 5 × 37 =
185
composite factor = 2
3 × 5
2 =
200
composite factor = 2 × 3 × 37 =
222
composite factor = 2 × 5
3 =
250
composite factor = 2
3 × 37 =
296
composite factor = 2
2 × 3 × 5
2 =
300
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 37 =
370
composite factor = 3 × 5
3 =
375
composite factor = 2
2 × 3 × 37 =
444
composite factor = 2
2 × 5
3 =
500
composite factor = 3 × 5 × 37 =
555
composite factor = 2
3 × 3 × 5
2 =
600
composite factor = 2
2 × 5 × 37 =
740
composite factor = 2 × 3 × 5
3 =
750
composite factor = 2
3 × 3 × 37 =
888
composite factor = 5
2 × 37 =
925
composite factor = 2
3 × 5
3 =
1,000
composite factor = 2 × 3 × 5 × 37 =
1,110
composite factor = 2
3 × 5 × 37 =
1,480
composite factor = 2
2 × 3 × 5
3 =
1,500
composite factor = 2 × 5
2 × 37 =
1,850
composite factor = 2
2 × 3 × 5 × 37 =
2,220
composite factor = 3 × 5
2 × 37 =
2,775
composite factor = 2
3 × 3 × 5
3 =
3,000
composite factor = 2
2 × 5
2 × 37 =
3,700
composite factor = 2
3 × 3 × 5 × 37 =
4,440
composite factor = 5
3 × 37 =
4,625
composite factor = 2 × 3 × 5
2 × 37 =
5,550
composite factor = 2
3 × 5
2 × 37 =
7,400
composite factor = 2 × 5
3 × 37 =
9,250
composite factor = 2
2 × 3 × 5
2 × 37 =
11,100
composite factor = 3 × 5
3 × 37 =
13,875
composite factor = 2
2 × 5
3 × 37 =
18,500
composite factor = 2
3 × 3 × 5
2 × 37 =
22,200
composite factor = 2 × 3 × 5
3 × 37 =
27,750
composite factor = 2
3 × 5
3 × 37 =
37,000
composite factor = 2
2 × 3 × 5
3 × 37 =
55,500
composite factor = 2
3 × 3 × 5
3 × 37 =
111,000
64 factors (divisors)
What times what is 111,000?
What number multiplied by what number equals 111,000?
All the combinations of any two natural numbers whose product equals 111,000.
1 × 111,000 = 111,000
2 × 55,500 = 111,000
3 × 37,000 = 111,000
4 × 27,750 = 111,000
5 × 22,200 = 111,000
6 × 18,500 = 111,000
8 × 13,875 = 111,000
10 × 11,100 = 111,000
12 × 9,250 = 111,000
15 × 7,400 = 111,000
20 × 5,550 = 111,000
24 × 4,625 = 111,000
25 × 4,440 = 111,000
30 × 3,700 = 111,000
37 × 3,000 = 111,000
40 × 2,775 = 111,000
50 × 2,220 = 111,000
60 × 1,850 = 111,000
74 × 1,500 = 111,000
75 × 1,480 = 111,000
100 × 1,110 = 111,000
111 × 1,000 = 111,000
120 × 925 = 111,000
125 × 888 = 111,000
148 × 750 = 111,000
150 × 740 = 111,000
185 × 600 = 111,000
200 × 555 = 111,000
222 × 500 = 111,000
250 × 444 = 111,000
296 × 375 = 111,000
300 × 370 = 111,000
32 unique multiplications The final answer:
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