To find all the divisors of the number 1,996,008:
- 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 1,996,008:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,996,008 = 23 × 3 × 7 × 1092
1,996,008 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 = (3 + 1) × (1 + 1) × (1 + 1) × (2 + 1) = 4 × 2 × 2 × 3 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 1,996,008
- 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
composite factor = 2 × 3 =
6
prime factor =
7
composite factor = 2
3 =
8
composite factor = 2
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 3 × 7 =
21
composite factor = 2
3 × 3 =
24
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 7 =
42
composite factor = 2
3 × 7 =
56
composite factor = 2
2 × 3 × 7 =
84
prime factor =
109
composite factor = 2
3 × 3 × 7 =
168
composite factor = 2 × 109 =
218
composite factor = 3 × 109 =
327
composite factor = 2
2 × 109 =
436
composite factor = 2 × 3 × 109 =
654
composite factor = 7 × 109 =
763
composite factor = 2
3 × 109 =
872
composite factor = 2
2 × 3 × 109 =
1,308
This list continues below...
... This list continues from above
composite factor = 2 × 7 × 109 =
1,526
composite factor = 3 × 7 × 109 =
2,289
composite factor = 2
3 × 3 × 109 =
2,616
composite factor = 2
2 × 7 × 109 =
3,052
composite factor = 2 × 3 × 7 × 109 =
4,578
composite factor = 2
3 × 7 × 109 =
6,104
composite factor = 2
2 × 3 × 7 × 109 =
9,156
composite factor = 109
2 =
11,881
composite factor = 2
3 × 3 × 7 × 109 =
18,312
composite factor = 2 × 109
2 =
23,762
composite factor = 3 × 109
2 =
35,643
composite factor = 2
2 × 109
2 =
47,524
composite factor = 2 × 3 × 109
2 =
71,286
composite factor = 7 × 109
2 =
83,167
composite factor = 2
3 × 109
2 =
95,048
composite factor = 2
2 × 3 × 109
2 =
142,572
composite factor = 2 × 7 × 109
2 =
166,334
composite factor = 3 × 7 × 109
2 =
249,501
composite factor = 2
3 × 3 × 109
2 =
285,144
composite factor = 2
2 × 7 × 109
2 =
332,668
composite factor = 2 × 3 × 7 × 109
2 =
499,002
composite factor = 2
3 × 7 × 109
2 =
665,336
composite factor = 2
2 × 3 × 7 × 109
2 =
998,004
composite factor = 2
3 × 3 × 7 × 109
2 =
1,996,008
48 factors (divisors)
What times what is 1,996,008?
What number multiplied by what number equals 1,996,008?
All the combinations of any two natural numbers whose product equals 1,996,008.
1 × 1,996,008 = 1,996,008
2 × 998,004 = 1,996,008
3 × 665,336 = 1,996,008
4 × 499,002 = 1,996,008
6 × 332,668 = 1,996,008
7 × 285,144 = 1,996,008
8 × 249,501 = 1,996,008
12 × 166,334 = 1,996,008
14 × 142,572 = 1,996,008
21 × 95,048 = 1,996,008
24 × 83,167 = 1,996,008
28 × 71,286 = 1,996,008
42 × 47,524 = 1,996,008
56 × 35,643 = 1,996,008
84 × 23,762 = 1,996,008
109 × 18,312 = 1,996,008
168 × 11,881 = 1,996,008
218 × 9,156 = 1,996,008
327 × 6,104 = 1,996,008
436 × 4,578 = 1,996,008
654 × 3,052 = 1,996,008
763 × 2,616 = 1,996,008
872 × 2,289 = 1,996,008
1,308 × 1,526 = 1,996,008
24 unique multiplications The final answer:
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