To find all the divisors of the number 4,850,220:
- 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 4,850,220:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
4,850,220 = 22 × 3 × 5 × 229 × 353
4,850,220 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 4,850,220
- 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 = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3 × 5 =
60
prime factor =
229
prime factor =
353
composite factor = 2 × 229 =
458
composite factor = 3 × 229 =
687
composite factor = 2 × 353 =
706
composite factor = 2
2 × 229 =
916
composite factor = 3 × 353 =
1,059
composite factor = 5 × 229 =
1,145
composite factor = 2 × 3 × 229 =
1,374
composite factor = 2
2 × 353 =
1,412
composite factor = 5 × 353 =
1,765
composite factor = 2 × 3 × 353 =
2,118
This list continues below...
... This list continues from above
composite factor = 2 × 5 × 229 =
2,290
composite factor = 2
2 × 3 × 229 =
2,748
composite factor = 3 × 5 × 229 =
3,435
composite factor = 2 × 5 × 353 =
3,530
composite factor = 2
2 × 3 × 353 =
4,236
composite factor = 2
2 × 5 × 229 =
4,580
composite factor = 3 × 5 × 353 =
5,295
composite factor = 2 × 3 × 5 × 229 =
6,870
composite factor = 2
2 × 5 × 353 =
7,060
composite factor = 2 × 3 × 5 × 353 =
10,590
composite factor = 2
2 × 3 × 5 × 229 =
13,740
composite factor = 2
2 × 3 × 5 × 353 =
21,180
composite factor = 229 × 353 =
80,837
composite factor = 2 × 229 × 353 =
161,674
composite factor = 3 × 229 × 353 =
242,511
composite factor = 2
2 × 229 × 353 =
323,348
composite factor = 5 × 229 × 353 =
404,185
composite factor = 2 × 3 × 229 × 353 =
485,022
composite factor = 2 × 5 × 229 × 353 =
808,370
composite factor = 2
2 × 3 × 229 × 353 =
970,044
composite factor = 3 × 5 × 229 × 353 =
1,212,555
composite factor = 2
2 × 5 × 229 × 353 =
1,616,740
composite factor = 2 × 3 × 5 × 229 × 353 =
2,425,110
composite factor = 2
2 × 3 × 5 × 229 × 353 =
4,850,220
48 factors (divisors)
What times what is 4,850,220?
What number multiplied by what number equals 4,850,220?
All the combinations of any two natural numbers whose product equals 4,850,220.
1 × 4,850,220 = 4,850,220
2 × 2,425,110 = 4,850,220
3 × 1,616,740 = 4,850,220
4 × 1,212,555 = 4,850,220
5 × 970,044 = 4,850,220
6 × 808,370 = 4,850,220
10 × 485,022 = 4,850,220
12 × 404,185 = 4,850,220
15 × 323,348 = 4,850,220
20 × 242,511 = 4,850,220
30 × 161,674 = 4,850,220
60 × 80,837 = 4,850,220
229 × 21,180 = 4,850,220
353 × 13,740 = 4,850,220
458 × 10,590 = 4,850,220
687 × 7,060 = 4,850,220
706 × 6,870 = 4,850,220
916 × 5,295 = 4,850,220
1,059 × 4,580 = 4,850,220
1,145 × 4,236 = 4,850,220
1,374 × 3,530 = 4,850,220
1,412 × 3,435 = 4,850,220
1,765 × 2,748 = 4,850,220
2,118 × 2,290 = 4,850,220
24 unique multiplications The final answer:
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