To find all the divisors of the number 34,257,580:
- 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 34,257,580:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
34,257,580 = 22 × 5 × 7 × 23 × 10,639
34,257,580 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 34,257,580
- 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
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 2
2 × 5 =
20
prime factor =
23
composite factor = 2
2 × 7 =
28
composite factor = 5 × 7 =
35
composite factor = 2 × 23 =
46
composite factor = 2 × 5 × 7 =
70
composite factor = 2
2 × 23 =
92
composite factor = 5 × 23 =
115
composite factor = 2
2 × 5 × 7 =
140
composite factor = 7 × 23 =
161
composite factor = 2 × 5 × 23 =
230
composite factor = 2 × 7 × 23 =
322
composite factor = 2
2 × 5 × 23 =
460
composite factor = 2
2 × 7 × 23 =
644
composite factor = 5 × 7 × 23 =
805
composite factor = 2 × 5 × 7 × 23 =
1,610
composite factor = 2
2 × 5 × 7 × 23 =
3,220
This list continues below...
... This list continues from above
prime factor =
10,639
composite factor = 2 × 10,639 =
21,278
composite factor = 2
2 × 10,639 =
42,556
composite factor = 5 × 10,639 =
53,195
composite factor = 7 × 10,639 =
74,473
composite factor = 2 × 5 × 10,639 =
106,390
composite factor = 2 × 7 × 10,639 =
148,946
composite factor = 2
2 × 5 × 10,639 =
212,780
composite factor = 23 × 10,639 =
244,697
composite factor = 2
2 × 7 × 10,639 =
297,892
composite factor = 5 × 7 × 10,639 =
372,365
composite factor = 2 × 23 × 10,639 =
489,394
composite factor = 2 × 5 × 7 × 10,639 =
744,730
composite factor = 2
2 × 23 × 10,639 =
978,788
composite factor = 5 × 23 × 10,639 =
1,223,485
composite factor = 2
2 × 5 × 7 × 10,639 =
1,489,460
composite factor = 7 × 23 × 10,639 =
1,712,879
composite factor = 2 × 5 × 23 × 10,639 =
2,446,970
composite factor = 2 × 7 × 23 × 10,639 =
3,425,758
composite factor = 2
2 × 5 × 23 × 10,639 =
4,893,940
composite factor = 2
2 × 7 × 23 × 10,639 =
6,851,516
composite factor = 5 × 7 × 23 × 10,639 =
8,564,395
composite factor = 2 × 5 × 7 × 23 × 10,639 =
17,128,790
composite factor = 2
2 × 5 × 7 × 23 × 10,639 =
34,257,580
48 factors (divisors)
What times what is 34,257,580?
What number multiplied by what number equals 34,257,580?
All the combinations of any two natural numbers whose product equals 34,257,580.
1 × 34,257,580 = 34,257,580
2 × 17,128,790 = 34,257,580
4 × 8,564,395 = 34,257,580
5 × 6,851,516 = 34,257,580
7 × 4,893,940 = 34,257,580
10 × 3,425,758 = 34,257,580
14 × 2,446,970 = 34,257,580
20 × 1,712,879 = 34,257,580
23 × 1,489,460 = 34,257,580
28 × 1,223,485 = 34,257,580
35 × 978,788 = 34,257,580
46 × 744,730 = 34,257,580
70 × 489,394 = 34,257,580
92 × 372,365 = 34,257,580
115 × 297,892 = 34,257,580
140 × 244,697 = 34,257,580
161 × 212,780 = 34,257,580
230 × 148,946 = 34,257,580
322 × 106,390 = 34,257,580
460 × 74,473 = 34,257,580
644 × 53,195 = 34,257,580
805 × 42,556 = 34,257,580
1,610 × 21,278 = 34,257,580
3,220 × 10,639 = 34,257,580
24 unique multiplications The final answer:
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