To find all the divisors of the number 463,420:
- 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 463,420:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
463,420 = 22 × 5 × 17 × 29 × 47
463,420 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 463,420
- 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 =
17
composite factor = 2
2 × 5 =
20
prime factor =
29
composite factor = 2 × 17 =
34
prime factor =
47
composite factor = 2 × 29 =
58
composite factor = 2
2 × 17 =
68
composite factor = 5 × 17 =
85
composite factor = 2 × 47 =
94
composite factor = 2
2 × 29 =
116
composite factor = 5 × 29 =
145
composite factor = 2 × 5 × 17 =
170
composite factor = 2
2 × 47 =
188
composite factor = 5 × 47 =
235
composite factor = 2 × 5 × 29 =
290
composite factor = 2
2 × 5 × 17 =
340
composite factor = 2 × 5 × 47 =
470
composite factor = 17 × 29 =
493
composite factor = 2
2 × 5 × 29 =
580
This list continues below...
... This list continues from above
composite factor = 17 × 47 =
799
composite factor = 2
2 × 5 × 47 =
940
composite factor = 2 × 17 × 29 =
986
composite factor = 29 × 47 =
1,363
composite factor = 2 × 17 × 47 =
1,598
composite factor = 2
2 × 17 × 29 =
1,972
composite factor = 5 × 17 × 29 =
2,465
composite factor = 2 × 29 × 47 =
2,726
composite factor = 2
2 × 17 × 47 =
3,196
composite factor = 5 × 17 × 47 =
3,995
composite factor = 2 × 5 × 17 × 29 =
4,930
composite factor = 2
2 × 29 × 47 =
5,452
composite factor = 5 × 29 × 47 =
6,815
composite factor = 2 × 5 × 17 × 47 =
7,990
composite factor = 2
2 × 5 × 17 × 29 =
9,860
composite factor = 2 × 5 × 29 × 47 =
13,630
composite factor = 2
2 × 5 × 17 × 47 =
15,980
composite factor = 17 × 29 × 47 =
23,171
composite factor = 2
2 × 5 × 29 × 47 =
27,260
composite factor = 2 × 17 × 29 × 47 =
46,342
composite factor = 2
2 × 17 × 29 × 47 =
92,684
composite factor = 5 × 17 × 29 × 47 =
115,855
composite factor = 2 × 5 × 17 × 29 × 47 =
231,710
composite factor = 2
2 × 5 × 17 × 29 × 47 =
463,420
48 factors (divisors)
What times what is 463,420?
What number multiplied by what number equals 463,420?
All the combinations of any two natural numbers whose product equals 463,420.
1 × 463,420 = 463,420
2 × 231,710 = 463,420
4 × 115,855 = 463,420
5 × 92,684 = 463,420
10 × 46,342 = 463,420
17 × 27,260 = 463,420
20 × 23,171 = 463,420
29 × 15,980 = 463,420
34 × 13,630 = 463,420
47 × 9,860 = 463,420
58 × 7,990 = 463,420
68 × 6,815 = 463,420
85 × 5,452 = 463,420
94 × 4,930 = 463,420
116 × 3,995 = 463,420
145 × 3,196 = 463,420
170 × 2,726 = 463,420
188 × 2,465 = 463,420
235 × 1,972 = 463,420
290 × 1,598 = 463,420
340 × 1,363 = 463,420
470 × 986 = 463,420
493 × 940 = 463,420
580 × 799 = 463,420
24 unique multiplications The final answer:
(scroll down)