To find all the divisors of the number 13,813,350:
- 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 13,813,350:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
13,813,350 = 2 × 3 × 52 × 17 × 5,417
13,813,350 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 = (1 + 1) × (1 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 2 × 2 × 3 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 13,813,350
- 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
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 3 × 5 =
15
prime factor =
17
composite factor = 5
2 =
25
composite factor = 2 × 3 × 5 =
30
composite factor = 2 × 17 =
34
composite factor = 2 × 5
2 =
50
composite factor = 3 × 17 =
51
composite factor = 3 × 5
2 =
75
composite factor = 5 × 17 =
85
composite factor = 2 × 3 × 17 =
102
composite factor = 2 × 3 × 5
2 =
150
composite factor = 2 × 5 × 17 =
170
composite factor = 3 × 5 × 17 =
255
composite factor = 5
2 × 17 =
425
composite factor = 2 × 3 × 5 × 17 =
510
composite factor = 2 × 5
2 × 17 =
850
composite factor = 3 × 5
2 × 17 =
1,275
composite factor = 2 × 3 × 5
2 × 17 =
2,550
This list continues below...
... This list continues from above
prime factor =
5,417
composite factor = 2 × 5,417 =
10,834
composite factor = 3 × 5,417 =
16,251
composite factor = 5 × 5,417 =
27,085
composite factor = 2 × 3 × 5,417 =
32,502
composite factor = 2 × 5 × 5,417 =
54,170
composite factor = 3 × 5 × 5,417 =
81,255
composite factor = 17 × 5,417 =
92,089
composite factor = 5
2 × 5,417 =
135,425
composite factor = 2 × 3 × 5 × 5,417 =
162,510
composite factor = 2 × 17 × 5,417 =
184,178
composite factor = 2 × 5
2 × 5,417 =
270,850
composite factor = 3 × 17 × 5,417 =
276,267
composite factor = 3 × 5
2 × 5,417 =
406,275
composite factor = 5 × 17 × 5,417 =
460,445
composite factor = 2 × 3 × 17 × 5,417 =
552,534
composite factor = 2 × 3 × 5
2 × 5,417 =
812,550
composite factor = 2 × 5 × 17 × 5,417 =
920,890
composite factor = 3 × 5 × 17 × 5,417 =
1,381,335
composite factor = 5
2 × 17 × 5,417 =
2,302,225
composite factor = 2 × 3 × 5 × 17 × 5,417 =
2,762,670
composite factor = 2 × 5
2 × 17 × 5,417 =
4,604,450
composite factor = 3 × 5
2 × 17 × 5,417 =
6,906,675
composite factor = 2 × 3 × 5
2 × 17 × 5,417 =
13,813,350
48 factors (divisors)
What times what is 13,813,350?
What number multiplied by what number equals 13,813,350?
All the combinations of any two natural numbers whose product equals 13,813,350.
1 × 13,813,350 = 13,813,350
2 × 6,906,675 = 13,813,350
3 × 4,604,450 = 13,813,350
5 × 2,762,670 = 13,813,350
6 × 2,302,225 = 13,813,350
10 × 1,381,335 = 13,813,350
15 × 920,890 = 13,813,350
17 × 812,550 = 13,813,350
25 × 552,534 = 13,813,350
30 × 460,445 = 13,813,350
34 × 406,275 = 13,813,350
50 × 276,267 = 13,813,350
51 × 270,850 = 13,813,350
75 × 184,178 = 13,813,350
85 × 162,510 = 13,813,350
102 × 135,425 = 13,813,350
150 × 92,089 = 13,813,350
170 × 81,255 = 13,813,350
255 × 54,170 = 13,813,350
425 × 32,502 = 13,813,350
510 × 27,085 = 13,813,350
850 × 16,251 = 13,813,350
1,275 × 10,834 = 13,813,350
2,550 × 5,417 = 13,813,350
24 unique multiplications The final answer:
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