To find all the divisors of the number 4,968,500:
- 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 4,968,500:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
4,968,500 = 22 × 53 × 19 × 523
4,968,500 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) × (3 + 1) × (1 + 1) × (1 + 1) = 3 × 4 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 4,968,500
- 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
composite factor = 5
3 =
125
composite factor = 2 × 5 × 19 =
190
composite factor = 2 × 5
3 =
250
composite factor = 2
2 × 5 × 19 =
380
composite factor = 5
2 × 19 =
475
composite factor = 2
2 × 5
3 =
500
prime factor =
523
composite factor = 2 × 5
2 × 19 =
950
composite factor = 2 × 523 =
1,046
composite factor = 2
2 × 5
2 × 19 =
1,900
composite factor = 2
2 × 523 =
2,092
This list continues below...
... This list continues from above
composite factor = 5
3 × 19 =
2,375
composite factor = 5 × 523 =
2,615
composite factor = 2 × 5
3 × 19 =
4,750
composite factor = 2 × 5 × 523 =
5,230
composite factor = 2
2 × 5
3 × 19 =
9,500
composite factor = 19 × 523 =
9,937
composite factor = 2
2 × 5 × 523 =
10,460
composite factor = 5
2 × 523 =
13,075
composite factor = 2 × 19 × 523 =
19,874
composite factor = 2 × 5
2 × 523 =
26,150
composite factor = 2
2 × 19 × 523 =
39,748
composite factor = 5 × 19 × 523 =
49,685
composite factor = 2
2 × 5
2 × 523 =
52,300
composite factor = 5
3 × 523 =
65,375
composite factor = 2 × 5 × 19 × 523 =
99,370
composite factor = 2 × 5
3 × 523 =
130,750
composite factor = 2
2 × 5 × 19 × 523 =
198,740
composite factor = 5
2 × 19 × 523 =
248,425
composite factor = 2
2 × 5
3 × 523 =
261,500
composite factor = 2 × 5
2 × 19 × 523 =
496,850
composite factor = 2
2 × 5
2 × 19 × 523 =
993,700
composite factor = 5
3 × 19 × 523 =
1,242,125
composite factor = 2 × 5
3 × 19 × 523 =
2,484,250
composite factor = 2
2 × 5
3 × 19 × 523 =
4,968,500
48 factors (divisors)
What times what is 4,968,500?
What number multiplied by what number equals 4,968,500?
All the combinations of any two natural numbers whose product equals 4,968,500.
1 × 4,968,500 = 4,968,500
2 × 2,484,250 = 4,968,500
4 × 1,242,125 = 4,968,500
5 × 993,700 = 4,968,500
10 × 496,850 = 4,968,500
19 × 261,500 = 4,968,500
20 × 248,425 = 4,968,500
25 × 198,740 = 4,968,500
38 × 130,750 = 4,968,500
50 × 99,370 = 4,968,500
76 × 65,375 = 4,968,500
95 × 52,300 = 4,968,500
100 × 49,685 = 4,968,500
125 × 39,748 = 4,968,500
190 × 26,150 = 4,968,500
250 × 19,874 = 4,968,500
380 × 13,075 = 4,968,500
475 × 10,460 = 4,968,500
500 × 9,937 = 4,968,500
523 × 9,500 = 4,968,500
950 × 5,230 = 4,968,500
1,046 × 4,750 = 4,968,500
1,900 × 2,615 = 4,968,500
2,092 × 2,375 = 4,968,500
24 unique multiplications The final answer:
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