To find all the divisors of the number 1,355,068:
- 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 1,355,068:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,355,068 = 22 × 11 × 13 × 23 × 103
1,355,068 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) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,355,068
- 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 =
11
prime factor =
13
composite factor = 2 × 11 =
22
prime factor =
23
composite factor = 2 × 13 =
26
composite factor = 2
2 × 11 =
44
composite factor = 2 × 23 =
46
composite factor = 2
2 × 13 =
52
composite factor = 2
2 × 23 =
92
prime factor =
103
composite factor = 11 × 13 =
143
composite factor = 2 × 103 =
206
composite factor = 11 × 23 =
253
composite factor = 2 × 11 × 13 =
286
composite factor = 13 × 23 =
299
composite factor = 2
2 × 103 =
412
composite factor = 2 × 11 × 23 =
506
composite factor = 2
2 × 11 × 13 =
572
composite factor = 2 × 13 × 23 =
598
composite factor = 2
2 × 11 × 23 =
1,012
composite factor = 11 × 103 =
1,133
This list continues below...
... This list continues from above
composite factor = 2
2 × 13 × 23 =
1,196
composite factor = 13 × 103 =
1,339
composite factor = 2 × 11 × 103 =
2,266
composite factor = 23 × 103 =
2,369
composite factor = 2 × 13 × 103 =
2,678
composite factor = 11 × 13 × 23 =
3,289
composite factor = 2
2 × 11 × 103 =
4,532
composite factor = 2 × 23 × 103 =
4,738
composite factor = 2
2 × 13 × 103 =
5,356
composite factor = 2 × 11 × 13 × 23 =
6,578
composite factor = 2
2 × 23 × 103 =
9,476
composite factor = 2
2 × 11 × 13 × 23 =
13,156
composite factor = 11 × 13 × 103 =
14,729
composite factor = 11 × 23 × 103 =
26,059
composite factor = 2 × 11 × 13 × 103 =
29,458
composite factor = 13 × 23 × 103 =
30,797
composite factor = 2 × 11 × 23 × 103 =
52,118
composite factor = 2
2 × 11 × 13 × 103 =
58,916
composite factor = 2 × 13 × 23 × 103 =
61,594
composite factor = 2
2 × 11 × 23 × 103 =
104,236
composite factor = 2
2 × 13 × 23 × 103 =
123,188
composite factor = 11 × 13 × 23 × 103 =
338,767
composite factor = 2 × 11 × 13 × 23 × 103 =
677,534
composite factor = 2
2 × 11 × 13 × 23 × 103 =
1,355,068
48 factors (divisors)
What times what is 1,355,068?
What number multiplied by what number equals 1,355,068?
All the combinations of any two natural numbers whose product equals 1,355,068.
1 × 1,355,068 = 1,355,068
2 × 677,534 = 1,355,068
4 × 338,767 = 1,355,068
11 × 123,188 = 1,355,068
13 × 104,236 = 1,355,068
22 × 61,594 = 1,355,068
23 × 58,916 = 1,355,068
26 × 52,118 = 1,355,068
44 × 30,797 = 1,355,068
46 × 29,458 = 1,355,068
52 × 26,059 = 1,355,068
92 × 14,729 = 1,355,068
103 × 13,156 = 1,355,068
143 × 9,476 = 1,355,068
206 × 6,578 = 1,355,068
253 × 5,356 = 1,355,068
286 × 4,738 = 1,355,068
299 × 4,532 = 1,355,068
412 × 3,289 = 1,355,068
506 × 2,678 = 1,355,068
572 × 2,369 = 1,355,068
598 × 2,266 = 1,355,068
1,012 × 1,339 = 1,355,068
1,133 × 1,196 = 1,355,068
24 unique multiplications The final answer:
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