To find all the divisors of the number 64,350:
- 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 64,350:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
64,350 = 2 × 32 × 52 × 11 × 13
64,350 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) × (2 + 1) × (2 + 1) × (1 + 1) × (1 + 1) = 2 × 3 × 3 × 2 × 2 = 72
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 64,350
- 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 = 3
2 =
9
composite factor = 2 × 5 =
10
prime factor =
11
prime factor =
13
composite factor = 3 × 5 =
15
composite factor = 2 × 3
2 =
18
composite factor = 2 × 11 =
22
composite factor = 5
2 =
25
composite factor = 2 × 13 =
26
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 11 =
33
composite factor = 3 × 13 =
39
composite factor = 3
2 × 5 =
45
composite factor = 2 × 5
2 =
50
composite factor = 5 × 11 =
55
composite factor = 5 × 13 =
65
composite factor = 2 × 3 × 11 =
66
composite factor = 3 × 5
2 =
75
composite factor = 2 × 3 × 13 =
78
composite factor = 2 × 3
2 × 5 =
90
composite factor = 3
2 × 11 =
99
composite factor = 2 × 5 × 11 =
110
composite factor = 3
2 × 13 =
117
composite factor = 2 × 5 × 13 =
130
composite factor = 11 × 13 =
143
composite factor = 2 × 3 × 5
2 =
150
composite factor = 3 × 5 × 11 =
165
composite factor = 3 × 5 × 13 =
195
composite factor = 2 × 3
2 × 11 =
198
composite factor = 3
2 × 5
2 =
225
composite factor = 2 × 3
2 × 13 =
234
This list continues below...
... This list continues from above
composite factor = 5
2 × 11 =
275
composite factor = 2 × 11 × 13 =
286
composite factor = 5
2 × 13 =
325
composite factor = 2 × 3 × 5 × 11 =
330
composite factor = 2 × 3 × 5 × 13 =
390
composite factor = 3 × 11 × 13 =
429
composite factor = 2 × 3
2 × 5
2 =
450
composite factor = 3
2 × 5 × 11 =
495
composite factor = 2 × 5
2 × 11 =
550
composite factor = 3
2 × 5 × 13 =
585
composite factor = 2 × 5
2 × 13 =
650
composite factor = 5 × 11 × 13 =
715
composite factor = 3 × 5
2 × 11 =
825
composite factor = 2 × 3 × 11 × 13 =
858
composite factor = 3 × 5
2 × 13 =
975
composite factor = 2 × 3
2 × 5 × 11 =
990
composite factor = 2 × 3
2 × 5 × 13 =
1,170
composite factor = 3
2 × 11 × 13 =
1,287
composite factor = 2 × 5 × 11 × 13 =
1,430
composite factor = 2 × 3 × 5
2 × 11 =
1,650
composite factor = 2 × 3 × 5
2 × 13 =
1,950
composite factor = 3 × 5 × 11 × 13 =
2,145
composite factor = 3
2 × 5
2 × 11 =
2,475
composite factor = 2 × 3
2 × 11 × 13 =
2,574
composite factor = 3
2 × 5
2 × 13 =
2,925
composite factor = 5
2 × 11 × 13 =
3,575
composite factor = 2 × 3 × 5 × 11 × 13 =
4,290
composite factor = 2 × 3
2 × 5
2 × 11 =
4,950
composite factor = 2 × 3
2 × 5
2 × 13 =
5,850
composite factor = 3
2 × 5 × 11 × 13 =
6,435
composite factor = 2 × 5
2 × 11 × 13 =
7,150
composite factor = 3 × 5
2 × 11 × 13 =
10,725
composite factor = 2 × 3
2 × 5 × 11 × 13 =
12,870
composite factor = 2 × 3 × 5
2 × 11 × 13 =
21,450
composite factor = 3
2 × 5
2 × 11 × 13 =
32,175
composite factor = 2 × 3
2 × 5
2 × 11 × 13 =
64,350
72 factors (divisors)
What times what is 64,350?
What number multiplied by what number equals 64,350?
All the combinations of any two natural numbers whose product equals 64,350.
1 × 64,350 = 64,350
2 × 32,175 = 64,350
3 × 21,450 = 64,350
5 × 12,870 = 64,350
6 × 10,725 = 64,350
9 × 7,150 = 64,350
10 × 6,435 = 64,350
11 × 5,850 = 64,350
13 × 4,950 = 64,350
15 × 4,290 = 64,350
18 × 3,575 = 64,350
22 × 2,925 = 64,350
25 × 2,574 = 64,350
26 × 2,475 = 64,350
30 × 2,145 = 64,350
33 × 1,950 = 64,350
39 × 1,650 = 64,350
45 × 1,430 = 64,350
50 × 1,287 = 64,350
55 × 1,170 = 64,350
65 × 990 = 64,350
66 × 975 = 64,350
75 × 858 = 64,350
78 × 825 = 64,350
90 × 715 = 64,350
99 × 650 = 64,350
110 × 585 = 64,350
117 × 550 = 64,350
130 × 495 = 64,350
143 × 450 = 64,350
150 × 429 = 64,350
165 × 390 = 64,350
195 × 330 = 64,350
198 × 325 = 64,350
225 × 286 = 64,350
234 × 275 = 64,350
36 unique multiplications The final answer:
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