To find all the divisors of the number 152,000:
- 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 152,000:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
152,000 = 26 × 53 × 19
152,000 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 = (6 + 1) × (3 + 1) × (1 + 1) = 7 × 4 × 2 = 56
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 152,000
- 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
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
4 =
16
prime factor =
19
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2
5 =
32
composite factor = 2 × 19 =
38
composite factor = 2
3 × 5 =
40
composite factor = 2 × 5
2 =
50
composite factor = 2
6 =
64
composite factor = 2
2 × 19 =
76
composite factor = 2
4 × 5 =
80
composite factor = 5 × 19 =
95
composite factor = 2
2 × 5
2 =
100
composite factor = 5
3 =
125
composite factor = 2
3 × 19 =
152
composite factor = 2
5 × 5 =
160
composite factor = 2 × 5 × 19 =
190
composite factor = 2
3 × 5
2 =
200
composite factor = 2 × 5
3 =
250
composite factor = 2
4 × 19 =
304
composite factor = 2
6 × 5 =
320
composite factor = 2
2 × 5 × 19 =
380
This list continues below...
... This list continues from above
composite factor = 2
4 × 5
2 =
400
composite factor = 5
2 × 19 =
475
composite factor = 2
2 × 5
3 =
500
composite factor = 2
5 × 19 =
608
composite factor = 2
3 × 5 × 19 =
760
composite factor = 2
5 × 5
2 =
800
composite factor = 2 × 5
2 × 19 =
950
composite factor = 2
3 × 5
3 =
1,000
composite factor = 2
6 × 19 =
1,216
composite factor = 2
4 × 5 × 19 =
1,520
composite factor = 2
6 × 5
2 =
1,600
composite factor = 2
2 × 5
2 × 19 =
1,900
composite factor = 2
4 × 5
3 =
2,000
composite factor = 5
3 × 19 =
2,375
composite factor = 2
5 × 5 × 19 =
3,040
composite factor = 2
3 × 5
2 × 19 =
3,800
composite factor = 2
5 × 5
3 =
4,000
composite factor = 2 × 5
3 × 19 =
4,750
composite factor = 2
6 × 5 × 19 =
6,080
composite factor = 2
4 × 5
2 × 19 =
7,600
composite factor = 2
6 × 5
3 =
8,000
composite factor = 2
2 × 5
3 × 19 =
9,500
composite factor = 2
5 × 5
2 × 19 =
15,200
composite factor = 2
3 × 5
3 × 19 =
19,000
composite factor = 2
6 × 5
2 × 19 =
30,400
composite factor = 2
4 × 5
3 × 19 =
38,000
composite factor = 2
5 × 5
3 × 19 =
76,000
composite factor = 2
6 × 5
3 × 19 =
152,000
56 factors (divisors)
What times what is 152,000?
What number multiplied by what number equals 152,000?
All the combinations of any two natural numbers whose product equals 152,000.
1 × 152,000 = 152,000
2 × 76,000 = 152,000
4 × 38,000 = 152,000
5 × 30,400 = 152,000
8 × 19,000 = 152,000
10 × 15,200 = 152,000
16 × 9,500 = 152,000
19 × 8,000 = 152,000
20 × 7,600 = 152,000
25 × 6,080 = 152,000
32 × 4,750 = 152,000
38 × 4,000 = 152,000
40 × 3,800 = 152,000
50 × 3,040 = 152,000
64 × 2,375 = 152,000
76 × 2,000 = 152,000
80 × 1,900 = 152,000
95 × 1,600 = 152,000
100 × 1,520 = 152,000
125 × 1,216 = 152,000
152 × 1,000 = 152,000
160 × 950 = 152,000
190 × 800 = 152,000
200 × 760 = 152,000
250 × 608 = 152,000
304 × 500 = 152,000
320 × 475 = 152,000
380 × 400 = 152,000
28 unique multiplications The final answer:
(scroll down)