To find all the divisors of the number 142,737,868:
- 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 142,737,868:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
142,737,868 = 22 × 7 × 13 × 271 × 1,447
142,737,868 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 142,737,868
- 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 =
7
prime factor =
13
composite factor = 2 × 7 =
14
composite factor = 2 × 13 =
26
composite factor = 2
2 × 7 =
28
composite factor = 2
2 × 13 =
52
composite factor = 7 × 13 =
91
composite factor = 2 × 7 × 13 =
182
prime factor =
271
composite factor = 2
2 × 7 × 13 =
364
composite factor = 2 × 271 =
542
composite factor = 2
2 × 271 =
1,084
prime factor =
1,447
composite factor = 7 × 271 =
1,897
composite factor = 2 × 1,447 =
2,894
composite factor = 13 × 271 =
3,523
composite factor = 2 × 7 × 271 =
3,794
composite factor = 2
2 × 1,447 =
5,788
composite factor = 2 × 13 × 271 =
7,046
composite factor = 2
2 × 7 × 271 =
7,588
composite factor = 7 × 1,447 =
10,129
This list continues below...
... This list continues from above
composite factor = 2
2 × 13 × 271 =
14,092
composite factor = 13 × 1,447 =
18,811
composite factor = 2 × 7 × 1,447 =
20,258
composite factor = 7 × 13 × 271 =
24,661
composite factor = 2 × 13 × 1,447 =
37,622
composite factor = 2
2 × 7 × 1,447 =
40,516
composite factor = 2 × 7 × 13 × 271 =
49,322
composite factor = 2
2 × 13 × 1,447 =
75,244
composite factor = 2
2 × 7 × 13 × 271 =
98,644
composite factor = 7 × 13 × 1,447 =
131,677
composite factor = 2 × 7 × 13 × 1,447 =
263,354
composite factor = 271 × 1,447 =
392,137
composite factor = 2
2 × 7 × 13 × 1,447 =
526,708
composite factor = 2 × 271 × 1,447 =
784,274
composite factor = 2
2 × 271 × 1,447 =
1,568,548
composite factor = 7 × 271 × 1,447 =
2,744,959
composite factor = 13 × 271 × 1,447 =
5,097,781
composite factor = 2 × 7 × 271 × 1,447 =
5,489,918
composite factor = 2 × 13 × 271 × 1,447 =
10,195,562
composite factor = 2
2 × 7 × 271 × 1,447 =
10,979,836
composite factor = 2
2 × 13 × 271 × 1,447 =
20,391,124
composite factor = 7 × 13 × 271 × 1,447 =
35,684,467
composite factor = 2 × 7 × 13 × 271 × 1,447 =
71,368,934
composite factor = 2
2 × 7 × 13 × 271 × 1,447 =
142,737,868
48 factors (divisors)
What times what is 142,737,868?
What number multiplied by what number equals 142,737,868?
All the combinations of any two natural numbers whose product equals 142,737,868.
1 × 142,737,868 = 142,737,868
2 × 71,368,934 = 142,737,868
4 × 35,684,467 = 142,737,868
7 × 20,391,124 = 142,737,868
13 × 10,979,836 = 142,737,868
14 × 10,195,562 = 142,737,868
26 × 5,489,918 = 142,737,868
28 × 5,097,781 = 142,737,868
52 × 2,744,959 = 142,737,868
91 × 1,568,548 = 142,737,868
182 × 784,274 = 142,737,868
271 × 526,708 = 142,737,868
364 × 392,137 = 142,737,868
542 × 263,354 = 142,737,868
1,084 × 131,677 = 142,737,868
1,447 × 98,644 = 142,737,868
1,897 × 75,244 = 142,737,868
2,894 × 49,322 = 142,737,868
3,523 × 40,516 = 142,737,868
3,794 × 37,622 = 142,737,868
5,788 × 24,661 = 142,737,868
7,046 × 20,258 = 142,737,868
7,588 × 18,811 = 142,737,868
10,129 × 14,092 = 142,737,868
24 unique multiplications The final answer:
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