To find all the divisors of the number 150,784:
- 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 150,784:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
150,784 = 28 × 19 × 31
150,784 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 = (8 + 1) × (1 + 1) × (1 + 1) = 9 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 150,784
- 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
composite factor = 2
3 =
8
composite factor = 2
4 =
16
prime factor =
19
prime factor =
31
composite factor = 2
5 =
32
composite factor = 2 × 19 =
38
composite factor = 2 × 31 =
62
composite factor = 2
6 =
64
composite factor = 2
2 × 19 =
76
composite factor = 2
2 × 31 =
124
composite factor = 2
7 =
128
composite factor = 2
3 × 19 =
152
composite factor = 2
3 × 31 =
248
composite factor = 2
8 =
256
composite factor = 2
4 × 19 =
304
This list continues below...
... This list continues from above
composite factor = 2
4 × 31 =
496
composite factor = 19 × 31 =
589
composite factor = 2
5 × 19 =
608
composite factor = 2
5 × 31 =
992
composite factor = 2 × 19 × 31 =
1,178
composite factor = 2
6 × 19 =
1,216
composite factor = 2
6 × 31 =
1,984
composite factor = 2
2 × 19 × 31 =
2,356
composite factor = 2
7 × 19 =
2,432
composite factor = 2
7 × 31 =
3,968
composite factor = 2
3 × 19 × 31 =
4,712
composite factor = 2
8 × 19 =
4,864
composite factor = 2
8 × 31 =
7,936
composite factor = 2
4 × 19 × 31 =
9,424
composite factor = 2
5 × 19 × 31 =
18,848
composite factor = 2
6 × 19 × 31 =
37,696
composite factor = 2
7 × 19 × 31 =
75,392
composite factor = 2
8 × 19 × 31 =
150,784
36 factors (divisors)
What times what is 150,784?
What number multiplied by what number equals 150,784?
All the combinations of any two natural numbers whose product equals 150,784.
1 × 150,784 = 150,784
2 × 75,392 = 150,784
4 × 37,696 = 150,784
8 × 18,848 = 150,784
16 × 9,424 = 150,784
19 × 7,936 = 150,784
31 × 4,864 = 150,784
32 × 4,712 = 150,784
38 × 3,968 = 150,784
62 × 2,432 = 150,784
64 × 2,356 = 150,784
76 × 1,984 = 150,784
124 × 1,216 = 150,784
128 × 1,178 = 150,784
152 × 992 = 150,784
248 × 608 = 150,784
256 × 589 = 150,784
304 × 496 = 150,784
18 unique multiplications The final answer:
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