To find all the divisors of the number 920,260:
- 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 920,260:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
920,260 = 22 × 5 × 11 × 47 × 89
920,260 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 920,260
- 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
prime factor =
11
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 2
2 × 11 =
44
prime factor =
47
composite factor = 5 × 11 =
55
prime factor =
89
composite factor = 2 × 47 =
94
composite factor = 2 × 5 × 11 =
110
composite factor = 2 × 89 =
178
composite factor = 2
2 × 47 =
188
composite factor = 2
2 × 5 × 11 =
220
composite factor = 5 × 47 =
235
composite factor = 2
2 × 89 =
356
composite factor = 5 × 89 =
445
composite factor = 2 × 5 × 47 =
470
composite factor = 11 × 47 =
517
composite factor = 2 × 5 × 89 =
890
composite factor = 2
2 × 5 × 47 =
940
This list continues below...
... This list continues from above
composite factor = 11 × 89 =
979
composite factor = 2 × 11 × 47 =
1,034
composite factor = 2
2 × 5 × 89 =
1,780
composite factor = 2 × 11 × 89 =
1,958
composite factor = 2
2 × 11 × 47 =
2,068
composite factor = 5 × 11 × 47 =
2,585
composite factor = 2
2 × 11 × 89 =
3,916
composite factor = 47 × 89 =
4,183
composite factor = 5 × 11 × 89 =
4,895
composite factor = 2 × 5 × 11 × 47 =
5,170
composite factor = 2 × 47 × 89 =
8,366
composite factor = 2 × 5 × 11 × 89 =
9,790
composite factor = 2
2 × 5 × 11 × 47 =
10,340
composite factor = 2
2 × 47 × 89 =
16,732
composite factor = 2
2 × 5 × 11 × 89 =
19,580
composite factor = 5 × 47 × 89 =
20,915
composite factor = 2 × 5 × 47 × 89 =
41,830
composite factor = 11 × 47 × 89 =
46,013
composite factor = 2
2 × 5 × 47 × 89 =
83,660
composite factor = 2 × 11 × 47 × 89 =
92,026
composite factor = 2
2 × 11 × 47 × 89 =
184,052
composite factor = 5 × 11 × 47 × 89 =
230,065
composite factor = 2 × 5 × 11 × 47 × 89 =
460,130
composite factor = 2
2 × 5 × 11 × 47 × 89 =
920,260
48 factors (divisors)
What times what is 920,260?
What number multiplied by what number equals 920,260?
All the combinations of any two natural numbers whose product equals 920,260.
1 × 920,260 = 920,260
2 × 460,130 = 920,260
4 × 230,065 = 920,260
5 × 184,052 = 920,260
10 × 92,026 = 920,260
11 × 83,660 = 920,260
20 × 46,013 = 920,260
22 × 41,830 = 920,260
44 × 20,915 = 920,260
47 × 19,580 = 920,260
55 × 16,732 = 920,260
89 × 10,340 = 920,260
94 × 9,790 = 920,260
110 × 8,366 = 920,260
178 × 5,170 = 920,260
188 × 4,895 = 920,260
220 × 4,183 = 920,260
235 × 3,916 = 920,260
356 × 2,585 = 920,260
445 × 2,068 = 920,260
470 × 1,958 = 920,260
517 × 1,780 = 920,260
890 × 1,034 = 920,260
940 × 979 = 920,260
24 unique multiplications The final answer:
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