To find all the divisors of the number 162,756:
- 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 162,756:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
162,756 = 22 × 33 × 11 × 137
162,756 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 = (2 + 1) × (3 + 1) × (1 + 1) × (1 + 1) = 3 × 4 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 162,756
- 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
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
prime factor =
11
composite factor = 2
2 × 3 =
12
composite factor = 2 × 3
2 =
18
composite factor = 2 × 11 =
22
composite factor = 3
3 =
27
composite factor = 3 × 11 =
33
composite factor = 2
2 × 3
2 =
36
composite factor = 2
2 × 11 =
44
composite factor = 2 × 3
3 =
54
composite factor = 2 × 3 × 11 =
66
composite factor = 3
2 × 11 =
99
composite factor = 2
2 × 3
3 =
108
composite factor = 2
2 × 3 × 11 =
132
prime factor =
137
composite factor = 2 × 3
2 × 11 =
198
composite factor = 2 × 137 =
274
composite factor = 3
3 × 11 =
297
composite factor = 2
2 × 3
2 × 11 =
396
This list continues below...
... This list continues from above
composite factor = 3 × 137 =
411
composite factor = 2
2 × 137 =
548
composite factor = 2 × 3
3 × 11 =
594
composite factor = 2 × 3 × 137 =
822
composite factor = 2
2 × 3
3 × 11 =
1,188
composite factor = 3
2 × 137 =
1,233
composite factor = 11 × 137 =
1,507
composite factor = 2
2 × 3 × 137 =
1,644
composite factor = 2 × 3
2 × 137 =
2,466
composite factor = 2 × 11 × 137 =
3,014
composite factor = 3
3 × 137 =
3,699
composite factor = 3 × 11 × 137 =
4,521
composite factor = 2
2 × 3
2 × 137 =
4,932
composite factor = 2
2 × 11 × 137 =
6,028
composite factor = 2 × 3
3 × 137 =
7,398
composite factor = 2 × 3 × 11 × 137 =
9,042
composite factor = 3
2 × 11 × 137 =
13,563
composite factor = 2
2 × 3
3 × 137 =
14,796
composite factor = 2
2 × 3 × 11 × 137 =
18,084
composite factor = 2 × 3
2 × 11 × 137 =
27,126
composite factor = 3
3 × 11 × 137 =
40,689
composite factor = 2
2 × 3
2 × 11 × 137 =
54,252
composite factor = 2 × 3
3 × 11 × 137 =
81,378
composite factor = 2
2 × 3
3 × 11 × 137 =
162,756
48 factors (divisors)
What times what is 162,756?
What number multiplied by what number equals 162,756?
All the combinations of any two natural numbers whose product equals 162,756.
1 × 162,756 = 162,756
2 × 81,378 = 162,756
3 × 54,252 = 162,756
4 × 40,689 = 162,756
6 × 27,126 = 162,756
9 × 18,084 = 162,756
11 × 14,796 = 162,756
12 × 13,563 = 162,756
18 × 9,042 = 162,756
22 × 7,398 = 162,756
27 × 6,028 = 162,756
33 × 4,932 = 162,756
36 × 4,521 = 162,756
44 × 3,699 = 162,756
54 × 3,014 = 162,756
66 × 2,466 = 162,756
99 × 1,644 = 162,756
108 × 1,507 = 162,756
132 × 1,233 = 162,756
137 × 1,188 = 162,756
198 × 822 = 162,756
274 × 594 = 162,756
297 × 548 = 162,756
396 × 411 = 162,756
24 unique multiplications The final answer:
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