To find all the divisors of the number 1,192,260:
- 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 1,192,260:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,192,260 = 22 × 3 × 5 × 31 × 641
1,192,260 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 1,192,260
- 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
prime factor =
31
composite factor = 2
2 × 3 × 5 =
60
composite factor = 2 × 31 =
62
composite factor = 3 × 31 =
93
composite factor = 2
2 × 31 =
124
composite factor = 5 × 31 =
155
composite factor = 2 × 3 × 31 =
186
composite factor = 2 × 5 × 31 =
310
composite factor = 2
2 × 3 × 31 =
372
composite factor = 3 × 5 × 31 =
465
composite factor = 2
2 × 5 × 31 =
620
prime factor =
641
composite factor = 2 × 3 × 5 × 31 =
930
This list continues below...
... This list continues from above
composite factor = 2 × 641 =
1,282
composite factor = 2
2 × 3 × 5 × 31 =
1,860
composite factor = 3 × 641 =
1,923
composite factor = 2
2 × 641 =
2,564
composite factor = 5 × 641 =
3,205
composite factor = 2 × 3 × 641 =
3,846
composite factor = 2 × 5 × 641 =
6,410
composite factor = 2
2 × 3 × 641 =
7,692
composite factor = 3 × 5 × 641 =
9,615
composite factor = 2
2 × 5 × 641 =
12,820
composite factor = 2 × 3 × 5 × 641 =
19,230
composite factor = 31 × 641 =
19,871
composite factor = 2
2 × 3 × 5 × 641 =
38,460
composite factor = 2 × 31 × 641 =
39,742
composite factor = 3 × 31 × 641 =
59,613
composite factor = 2
2 × 31 × 641 =
79,484
composite factor = 5 × 31 × 641 =
99,355
composite factor = 2 × 3 × 31 × 641 =
119,226
composite factor = 2 × 5 × 31 × 641 =
198,710
composite factor = 2
2 × 3 × 31 × 641 =
238,452
composite factor = 3 × 5 × 31 × 641 =
298,065
composite factor = 2
2 × 5 × 31 × 641 =
397,420
composite factor = 2 × 3 × 5 × 31 × 641 =
596,130
composite factor = 2
2 × 3 × 5 × 31 × 641 =
1,192,260
48 factors (divisors)
What times what is 1,192,260?
What number multiplied by what number equals 1,192,260?
All the combinations of any two natural numbers whose product equals 1,192,260.
1 × 1,192,260 = 1,192,260
2 × 596,130 = 1,192,260
3 × 397,420 = 1,192,260
4 × 298,065 = 1,192,260
5 × 238,452 = 1,192,260
6 × 198,710 = 1,192,260
10 × 119,226 = 1,192,260
12 × 99,355 = 1,192,260
15 × 79,484 = 1,192,260
20 × 59,613 = 1,192,260
30 × 39,742 = 1,192,260
31 × 38,460 = 1,192,260
60 × 19,871 = 1,192,260
62 × 19,230 = 1,192,260
93 × 12,820 = 1,192,260
124 × 9,615 = 1,192,260
155 × 7,692 = 1,192,260
186 × 6,410 = 1,192,260
310 × 3,846 = 1,192,260
372 × 3,205 = 1,192,260
465 × 2,564 = 1,192,260
620 × 1,923 = 1,192,260
641 × 1,860 = 1,192,260
930 × 1,282 = 1,192,260
24 unique multiplications The final answer:
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