To find all the divisors of the number 264,100:
- 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 264,100:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
264,100 = 22 × 52 × 19 × 139
264,100 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) × (2 + 1) × (1 + 1) × (1 + 1) = 3 × 3 × 2 × 2 = 36
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 264,100
- 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 =
19
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2 × 19 =
38
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 19 =
76
composite factor = 5 × 19 =
95
composite factor = 2
2 × 5
2 =
100
prime factor =
139
composite factor = 2 × 5 × 19 =
190
composite factor = 2 × 139 =
278
composite factor = 2
2 × 5 × 19 =
380
composite factor = 5
2 × 19 =
475
This list continues below...
... This list continues from above
composite factor = 2
2 × 139 =
556
composite factor = 5 × 139 =
695
composite factor = 2 × 5
2 × 19 =
950
composite factor = 2 × 5 × 139 =
1,390
composite factor = 2
2 × 5
2 × 19 =
1,900
composite factor = 19 × 139 =
2,641
composite factor = 2
2 × 5 × 139 =
2,780
composite factor = 5
2 × 139 =
3,475
composite factor = 2 × 19 × 139 =
5,282
composite factor = 2 × 5
2 × 139 =
6,950
composite factor = 2
2 × 19 × 139 =
10,564
composite factor = 5 × 19 × 139 =
13,205
composite factor = 2
2 × 5
2 × 139 =
13,900
composite factor = 2 × 5 × 19 × 139 =
26,410
composite factor = 2
2 × 5 × 19 × 139 =
52,820
composite factor = 5
2 × 19 × 139 =
66,025
composite factor = 2 × 5
2 × 19 × 139 =
132,050
composite factor = 2
2 × 5
2 × 19 × 139 =
264,100
36 factors (divisors)
What times what is 264,100?
What number multiplied by what number equals 264,100?
All the combinations of any two natural numbers whose product equals 264,100.
1 × 264,100 = 264,100
2 × 132,050 = 264,100
4 × 66,025 = 264,100
5 × 52,820 = 264,100
10 × 26,410 = 264,100
19 × 13,900 = 264,100
20 × 13,205 = 264,100
25 × 10,564 = 264,100
38 × 6,950 = 264,100
50 × 5,282 = 264,100
76 × 3,475 = 264,100
95 × 2,780 = 264,100
100 × 2,641 = 264,100
139 × 1,900 = 264,100
190 × 1,390 = 264,100
278 × 950 = 264,100
380 × 695 = 264,100
475 × 556 = 264,100
18 unique multiplications The final answer:
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