To find all the divisors of the number 236,250:
- 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 236,250:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
236,250 = 2 × 33 × 54 × 7
236,250 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) × (3 + 1) × (4 + 1) × (1 + 1) = 2 × 4 × 5 × 2 = 80
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 236,250
- 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
prime factor =
5
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 3 × 7 =
21
composite factor = 5
2 =
25
composite factor = 3
3 =
27
composite factor = 2 × 3 × 5 =
30
composite factor = 5 × 7 =
35
composite factor = 2 × 3 × 7 =
42
composite factor = 3
2 × 5 =
45
composite factor = 2 × 5
2 =
50
composite factor = 2 × 3
3 =
54
composite factor = 3
2 × 7 =
63
composite factor = 2 × 5 × 7 =
70
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3
2 × 5 =
90
composite factor = 3 × 5 × 7 =
105
composite factor = 5
3 =
125
composite factor = 2 × 3
2 × 7 =
126
composite factor = 3
3 × 5 =
135
composite factor = 2 × 3 × 5
2 =
150
composite factor = 5
2 × 7 =
175
composite factor = 3
3 × 7 =
189
composite factor = 2 × 3 × 5 × 7 =
210
composite factor = 3
2 × 5
2 =
225
composite factor = 2 × 5
3 =
250
composite factor = 2 × 3
3 × 5 =
270
composite factor = 3
2 × 5 × 7 =
315
composite factor = 2 × 5
2 × 7 =
350
composite factor = 3 × 5
3 =
375
composite factor = 2 × 3
3 × 7 =
378
composite factor = 2 × 3
2 × 5
2 =
450
This list continues below...
... This list continues from above
composite factor = 3 × 5
2 × 7 =
525
composite factor = 5
4 =
625
composite factor = 2 × 3
2 × 5 × 7 =
630
composite factor = 3
3 × 5
2 =
675
composite factor = 2 × 3 × 5
3 =
750
composite factor = 5
3 × 7 =
875
composite factor = 3
3 × 5 × 7 =
945
composite factor = 2 × 3 × 5
2 × 7 =
1,050
composite factor = 3
2 × 5
3 =
1,125
composite factor = 2 × 5
4 =
1,250
composite factor = 2 × 3
3 × 5
2 =
1,350
composite factor = 3
2 × 5
2 × 7 =
1,575
composite factor = 2 × 5
3 × 7 =
1,750
composite factor = 3 × 5
4 =
1,875
composite factor = 2 × 3
3 × 5 × 7 =
1,890
composite factor = 2 × 3
2 × 5
3 =
2,250
composite factor = 3 × 5
3 × 7 =
2,625
composite factor = 2 × 3
2 × 5
2 × 7 =
3,150
composite factor = 3
3 × 5
3 =
3,375
composite factor = 2 × 3 × 5
4 =
3,750
composite factor = 5
4 × 7 =
4,375
composite factor = 3
3 × 5
2 × 7 =
4,725
composite factor = 2 × 3 × 5
3 × 7 =
5,250
composite factor = 3
2 × 5
4 =
5,625
composite factor = 2 × 3
3 × 5
3 =
6,750
composite factor = 3
2 × 5
3 × 7 =
7,875
composite factor = 2 × 5
4 × 7 =
8,750
composite factor = 2 × 3
3 × 5
2 × 7 =
9,450
composite factor = 2 × 3
2 × 5
4 =
11,250
composite factor = 3 × 5
4 × 7 =
13,125
composite factor = 2 × 3
2 × 5
3 × 7 =
15,750
composite factor = 3
3 × 5
4 =
16,875
composite factor = 3
3 × 5
3 × 7 =
23,625
composite factor = 2 × 3 × 5
4 × 7 =
26,250
composite factor = 2 × 3
3 × 5
4 =
33,750
composite factor = 3
2 × 5
4 × 7 =
39,375
composite factor = 2 × 3
3 × 5
3 × 7 =
47,250
composite factor = 2 × 3
2 × 5
4 × 7 =
78,750
composite factor = 3
3 × 5
4 × 7 =
118,125
composite factor = 2 × 3
3 × 5
4 × 7 =
236,250
80 factors (divisors)
What times what is 236,250?
What number multiplied by what number equals 236,250?
All the combinations of any two natural numbers whose product equals 236,250.
1 × 236,250 = 236,250
2 × 118,125 = 236,250
3 × 78,750 = 236,250
5 × 47,250 = 236,250
6 × 39,375 = 236,250
7 × 33,750 = 236,250
9 × 26,250 = 236,250
10 × 23,625 = 236,250
14 × 16,875 = 236,250
15 × 15,750 = 236,250
18 × 13,125 = 236,250
21 × 11,250 = 236,250
25 × 9,450 = 236,250
27 × 8,750 = 236,250
30 × 7,875 = 236,250
35 × 6,750 = 236,250
42 × 5,625 = 236,250
45 × 5,250 = 236,250
50 × 4,725 = 236,250
54 × 4,375 = 236,250
63 × 3,750 = 236,250
70 × 3,375 = 236,250
75 × 3,150 = 236,250
90 × 2,625 = 236,250
105 × 2,250 = 236,250
125 × 1,890 = 236,250
126 × 1,875 = 236,250
135 × 1,750 = 236,250
150 × 1,575 = 236,250
175 × 1,350 = 236,250
189 × 1,250 = 236,250
210 × 1,125 = 236,250
225 × 1,050 = 236,250
250 × 945 = 236,250
270 × 875 = 236,250
315 × 750 = 236,250
350 × 675 = 236,250
375 × 630 = 236,250
378 × 625 = 236,250
450 × 525 = 236,250
40 unique multiplications The final answer:
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