To find all the divisors of the number 55,836:
- 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 55,836:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
55,836 = 22 × 33 × 11 × 47
55,836 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 55,836
- 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
prime factor =
47
composite factor = 2 × 3
3 =
54
composite factor = 2 × 3 × 11 =
66
composite factor = 2 × 47 =
94
composite factor = 3
2 × 11 =
99
composite factor = 2
2 × 3
3 =
108
composite factor = 2
2 × 3 × 11 =
132
composite factor = 3 × 47 =
141
composite factor = 2
2 × 47 =
188
composite factor = 2 × 3
2 × 11 =
198
This list continues below...
... This list continues from above
composite factor = 2 × 3 × 47 =
282
composite factor = 3
3 × 11 =
297
composite factor = 2
2 × 3
2 × 11 =
396
composite factor = 3
2 × 47 =
423
composite factor = 11 × 47 =
517
composite factor = 2
2 × 3 × 47 =
564
composite factor = 2 × 3
3 × 11 =
594
composite factor = 2 × 3
2 × 47 =
846
composite factor = 2 × 11 × 47 =
1,034
composite factor = 2
2 × 3
3 × 11 =
1,188
composite factor = 3
3 × 47 =
1,269
composite factor = 3 × 11 × 47 =
1,551
composite factor = 2
2 × 3
2 × 47 =
1,692
composite factor = 2
2 × 11 × 47 =
2,068
composite factor = 2 × 3
3 × 47 =
2,538
composite factor = 2 × 3 × 11 × 47 =
3,102
composite factor = 3
2 × 11 × 47 =
4,653
composite factor = 2
2 × 3
3 × 47 =
5,076
composite factor = 2
2 × 3 × 11 × 47 =
6,204
composite factor = 2 × 3
2 × 11 × 47 =
9,306
composite factor = 3
3 × 11 × 47 =
13,959
composite factor = 2
2 × 3
2 × 11 × 47 =
18,612
composite factor = 2 × 3
3 × 11 × 47 =
27,918
composite factor = 2
2 × 3
3 × 11 × 47 =
55,836
48 factors (divisors)
What times what is 55,836?
What number multiplied by what number equals 55,836?
All the combinations of any two natural numbers whose product equals 55,836.
1 × 55,836 = 55,836
2 × 27,918 = 55,836
3 × 18,612 = 55,836
4 × 13,959 = 55,836
6 × 9,306 = 55,836
9 × 6,204 = 55,836
11 × 5,076 = 55,836
12 × 4,653 = 55,836
18 × 3,102 = 55,836
22 × 2,538 = 55,836
27 × 2,068 = 55,836
33 × 1,692 = 55,836
36 × 1,551 = 55,836
44 × 1,269 = 55,836
47 × 1,188 = 55,836
54 × 1,034 = 55,836
66 × 846 = 55,836
94 × 594 = 55,836
99 × 564 = 55,836
108 × 517 = 55,836
132 × 423 = 55,836
141 × 396 = 55,836
188 × 297 = 55,836
198 × 282 = 55,836
24 unique multiplications The final answer:
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