To find all the divisors of the number 13,716,900:
- 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 13,716,900:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
13,716,900 = 22 × 32 × 52 × 15,241
13,716,900 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) × (2 + 1) × (1 + 1) = 3 × 3 × 3 × 2 = 54
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 13,716,900
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 3
2 =
9
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2
2 × 5 =
20
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3
2 =
36
composite factor = 3
2 × 5 =
45
composite factor = 2 × 5
2 =
50
composite factor = 2
2 × 3 × 5 =
60
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3
2 × 5 =
90
composite factor = 2
2 × 5
2 =
100
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2
2 × 3
2 × 5 =
180
composite factor = 3
2 × 5
2 =
225
composite factor = 2
2 × 3 × 5
2 =
300
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 2
2 × 3
2 × 5
2 =
900
This list continues below...
... This list continues from above
prime factor =
15,241
composite factor = 2 × 15,241 =
30,482
composite factor = 3 × 15,241 =
45,723
composite factor = 2
2 × 15,241 =
60,964
composite factor = 5 × 15,241 =
76,205
composite factor = 2 × 3 × 15,241 =
91,446
composite factor = 3
2 × 15,241 =
137,169
composite factor = 2 × 5 × 15,241 =
152,410
composite factor = 2
2 × 3 × 15,241 =
182,892
composite factor = 3 × 5 × 15,241 =
228,615
composite factor = 2 × 3
2 × 15,241 =
274,338
composite factor = 2
2 × 5 × 15,241 =
304,820
composite factor = 5
2 × 15,241 =
381,025
composite factor = 2 × 3 × 5 × 15,241 =
457,230
composite factor = 2
2 × 3
2 × 15,241 =
548,676
composite factor = 3
2 × 5 × 15,241 =
685,845
composite factor = 2 × 5
2 × 15,241 =
762,050
composite factor = 2
2 × 3 × 5 × 15,241 =
914,460
composite factor = 3 × 5
2 × 15,241 =
1,143,075
composite factor = 2 × 3
2 × 5 × 15,241 =
1,371,690
composite factor = 2
2 × 5
2 × 15,241 =
1,524,100
composite factor = 2 × 3 × 5
2 × 15,241 =
2,286,150
composite factor = 2
2 × 3
2 × 5 × 15,241 =
2,743,380
composite factor = 3
2 × 5
2 × 15,241 =
3,429,225
composite factor = 2
2 × 3 × 5
2 × 15,241 =
4,572,300
composite factor = 2 × 3
2 × 5
2 × 15,241 =
6,858,450
composite factor = 2
2 × 3
2 × 5
2 × 15,241 =
13,716,900
54 factors (divisors)
What times what is 13,716,900?
What number multiplied by what number equals 13,716,900?
All the combinations of any two natural numbers whose product equals 13,716,900.
1 × 13,716,900 = 13,716,900
2 × 6,858,450 = 13,716,900
3 × 4,572,300 = 13,716,900
4 × 3,429,225 = 13,716,900
5 × 2,743,380 = 13,716,900
6 × 2,286,150 = 13,716,900
9 × 1,524,100 = 13,716,900
10 × 1,371,690 = 13,716,900
12 × 1,143,075 = 13,716,900
15 × 914,460 = 13,716,900
18 × 762,050 = 13,716,900
20 × 685,845 = 13,716,900
25 × 548,676 = 13,716,900
30 × 457,230 = 13,716,900
36 × 381,025 = 13,716,900
45 × 304,820 = 13,716,900
50 × 274,338 = 13,716,900
60 × 228,615 = 13,716,900
75 × 182,892 = 13,716,900
90 × 152,410 = 13,716,900
100 × 137,169 = 13,716,900
150 × 91,446 = 13,716,900
180 × 76,205 = 13,716,900
225 × 60,964 = 13,716,900
300 × 45,723 = 13,716,900
450 × 30,482 = 13,716,900
900 × 15,241 = 13,716,900
27 unique multiplications The final answer:
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