To find all the divisors of the number 55,442,060:
- 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 55,442,060:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
55,442,060 = 22 × 5 × 1,327 × 2,089
55,442,060 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) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 = 24
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 55,442,060
- 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 × 5 =
10
composite factor = 2
2 × 5 =
20
prime factor =
1,327
prime factor =
2,089
composite factor = 2 × 1,327 =
2,654
composite factor = 2 × 2,089 =
4,178
composite factor = 2
2 × 1,327 =
5,308
composite factor = 5 × 1,327 =
6,635
This list continues below...
... This list continues from above
composite factor = 2
2 × 2,089 =
8,356
composite factor = 5 × 2,089 =
10,445
composite factor = 2 × 5 × 1,327 =
13,270
composite factor = 2 × 5 × 2,089 =
20,890
composite factor = 2
2 × 5 × 1,327 =
26,540
composite factor = 2
2 × 5 × 2,089 =
41,780
composite factor = 1,327 × 2,089 =
2,772,103
composite factor = 2 × 1,327 × 2,089 =
5,544,206
composite factor = 2
2 × 1,327 × 2,089 =
11,088,412
composite factor = 5 × 1,327 × 2,089 =
13,860,515
composite factor = 2 × 5 × 1,327 × 2,089 =
27,721,030
composite factor = 2
2 × 5 × 1,327 × 2,089 =
55,442,060
24 factors (divisors)
What times what is 55,442,060?
What number multiplied by what number equals 55,442,060?
All the combinations of any two natural numbers whose product equals 55,442,060.
1 × 55,442,060 = 55,442,060
2 × 27,721,030 = 55,442,060
4 × 13,860,515 = 55,442,060
5 × 11,088,412 = 55,442,060
10 × 5,544,206 = 55,442,060
20 × 2,772,103 = 55,442,060
1,327 × 41,780 = 55,442,060
2,089 × 26,540 = 55,442,060
2,654 × 20,890 = 55,442,060
4,178 × 13,270 = 55,442,060
5,308 × 10,445 = 55,442,060
6,635 × 8,356 = 55,442,060
12 unique multiplications The final answer:
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