To find all the divisors of the number 7,488,012:
- 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 7,488,012:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
7,488,012 = 22 × 3 × 7 × 97 × 919
7,488,012 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 7,488,012
- 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
2 × 3 =
12
composite factor = 2 × 7 =
14
composite factor = 3 × 7 =
21
composite factor = 2
2 × 7 =
28
composite factor = 2 × 3 × 7 =
42
composite factor = 2
2 × 3 × 7 =
84
prime factor =
97
composite factor = 2 × 97 =
194
composite factor = 3 × 97 =
291
composite factor = 2
2 × 97 =
388
composite factor = 2 × 3 × 97 =
582
composite factor = 7 × 97 =
679
prime factor =
919
composite factor = 2
2 × 3 × 97 =
1,164
composite factor = 2 × 7 × 97 =
1,358
composite factor = 2 × 919 =
1,838
composite factor = 3 × 7 × 97 =
2,037
composite factor = 2
2 × 7 × 97 =
2,716
This list continues below...
... This list continues from above
composite factor = 3 × 919 =
2,757
composite factor = 2
2 × 919 =
3,676
composite factor = 2 × 3 × 7 × 97 =
4,074
composite factor = 2 × 3 × 919 =
5,514
composite factor = 7 × 919 =
6,433
composite factor = 2
2 × 3 × 7 × 97 =
8,148
composite factor = 2
2 × 3 × 919 =
11,028
composite factor = 2 × 7 × 919 =
12,866
composite factor = 3 × 7 × 919 =
19,299
composite factor = 2
2 × 7 × 919 =
25,732
composite factor = 2 × 3 × 7 × 919 =
38,598
composite factor = 2
2 × 3 × 7 × 919 =
77,196
composite factor = 97 × 919 =
89,143
composite factor = 2 × 97 × 919 =
178,286
composite factor = 3 × 97 × 919 =
267,429
composite factor = 2
2 × 97 × 919 =
356,572
composite factor = 2 × 3 × 97 × 919 =
534,858
composite factor = 7 × 97 × 919 =
624,001
composite factor = 2
2 × 3 × 97 × 919 =
1,069,716
composite factor = 2 × 7 × 97 × 919 =
1,248,002
composite factor = 3 × 7 × 97 × 919 =
1,872,003
composite factor = 2
2 × 7 × 97 × 919 =
2,496,004
composite factor = 2 × 3 × 7 × 97 × 919 =
3,744,006
composite factor = 2
2 × 3 × 7 × 97 × 919 =
7,488,012
48 factors (divisors)
What times what is 7,488,012?
What number multiplied by what number equals 7,488,012?
All the combinations of any two natural numbers whose product equals 7,488,012.
1 × 7,488,012 = 7,488,012
2 × 3,744,006 = 7,488,012
3 × 2,496,004 = 7,488,012
4 × 1,872,003 = 7,488,012
6 × 1,248,002 = 7,488,012
7 × 1,069,716 = 7,488,012
12 × 624,001 = 7,488,012
14 × 534,858 = 7,488,012
21 × 356,572 = 7,488,012
28 × 267,429 = 7,488,012
42 × 178,286 = 7,488,012
84 × 89,143 = 7,488,012
97 × 77,196 = 7,488,012
194 × 38,598 = 7,488,012
291 × 25,732 = 7,488,012
388 × 19,299 = 7,488,012
582 × 12,866 = 7,488,012
679 × 11,028 = 7,488,012
919 × 8,148 = 7,488,012
1,164 × 6,433 = 7,488,012
1,358 × 5,514 = 7,488,012
1,838 × 4,074 = 7,488,012
2,037 × 3,676 = 7,488,012
2,716 × 2,757 = 7,488,012
24 unique multiplications The final answer:
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