To find all the divisors of the number 122,347,020:
- 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 122,347,020:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
122,347,020 = 22 × 3 × 5 × 787 × 2,591
122,347,020 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 122,347,020
- 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 =
787
composite factor = 2 × 787 =
1,574
composite factor = 3 × 787 =
2,361
prime factor =
2,591
composite factor = 2
2 × 787 =
3,148
composite factor = 5 × 787 =
3,935
composite factor = 2 × 3 × 787 =
4,722
composite factor = 2 × 2,591 =
5,182
composite factor = 3 × 2,591 =
7,773
composite factor = 2 × 5 × 787 =
7,870
composite factor = 2
2 × 3 × 787 =
9,444
composite factor = 2
2 × 2,591 =
10,364
This list continues below...
... This list continues from above
composite factor = 3 × 5 × 787 =
11,805
composite factor = 5 × 2,591 =
12,955
composite factor = 2 × 3 × 2,591 =
15,546
composite factor = 2
2 × 5 × 787 =
15,740
composite factor = 2 × 3 × 5 × 787 =
23,610
composite factor = 2 × 5 × 2,591 =
25,910
composite factor = 2
2 × 3 × 2,591 =
31,092
composite factor = 3 × 5 × 2,591 =
38,865
composite factor = 2
2 × 3 × 5 × 787 =
47,220
composite factor = 2
2 × 5 × 2,591 =
51,820
composite factor = 2 × 3 × 5 × 2,591 =
77,730
composite factor = 2
2 × 3 × 5 × 2,591 =
155,460
composite factor = 787 × 2,591 =
2,039,117
composite factor = 2 × 787 × 2,591 =
4,078,234
composite factor = 3 × 787 × 2,591 =
6,117,351
composite factor = 2
2 × 787 × 2,591 =
8,156,468
composite factor = 5 × 787 × 2,591 =
10,195,585
composite factor = 2 × 3 × 787 × 2,591 =
12,234,702
composite factor = 2 × 5 × 787 × 2,591 =
20,391,170
composite factor = 2
2 × 3 × 787 × 2,591 =
24,469,404
composite factor = 3 × 5 × 787 × 2,591 =
30,586,755
composite factor = 2
2 × 5 × 787 × 2,591 =
40,782,340
composite factor = 2 × 3 × 5 × 787 × 2,591 =
61,173,510
composite factor = 2
2 × 3 × 5 × 787 × 2,591 =
122,347,020
48 factors (divisors)
What times what is 122,347,020?
What number multiplied by what number equals 122,347,020?
All the combinations of any two natural numbers whose product equals 122,347,020.
1 × 122,347,020 = 122,347,020
2 × 61,173,510 = 122,347,020
3 × 40,782,340 = 122,347,020
4 × 30,586,755 = 122,347,020
5 × 24,469,404 = 122,347,020
6 × 20,391,170 = 122,347,020
10 × 12,234,702 = 122,347,020
12 × 10,195,585 = 122,347,020
15 × 8,156,468 = 122,347,020
20 × 6,117,351 = 122,347,020
30 × 4,078,234 = 122,347,020
60 × 2,039,117 = 122,347,020
787 × 155,460 = 122,347,020
1,574 × 77,730 = 122,347,020
2,361 × 51,820 = 122,347,020
2,591 × 47,220 = 122,347,020
3,148 × 38,865 = 122,347,020
3,935 × 31,092 = 122,347,020
4,722 × 25,910 = 122,347,020
5,182 × 23,610 = 122,347,020
7,773 × 15,740 = 122,347,020
7,870 × 15,546 = 122,347,020
9,444 × 12,955 = 122,347,020
10,364 × 11,805 = 122,347,020
24 unique multiplications The final answer:
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