To find all the divisors of the number 71,369,375:
- 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 71,369,375:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
71,369,375 = 54 × 7 × 11 × 1,483
71,369,375 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 = (4 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 5 × 2 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 71,369,375
- 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 =
5
prime factor =
7
prime factor =
11
composite factor = 5
2 =
25
composite factor = 5 × 7 =
35
composite factor = 5 × 11 =
55
composite factor = 7 × 11 =
77
composite factor = 5
3 =
125
composite factor = 5
2 × 7 =
175
composite factor = 5
2 × 11 =
275
composite factor = 5 × 7 × 11 =
385
composite factor = 5
4 =
625
composite factor = 5
3 × 7 =
875
composite factor = 5
3 × 11 =
1,375
prime factor =
1,483
composite factor = 5
2 × 7 × 11 =
1,925
composite factor = 5
4 × 7 =
4,375
composite factor = 5
4 × 11 =
6,875
composite factor = 5 × 1,483 =
7,415
This list continues below...
... This list continues from above
composite factor = 5
3 × 7 × 11 =
9,625
composite factor = 7 × 1,483 =
10,381
composite factor = 11 × 1,483 =
16,313
composite factor = 5
2 × 1,483 =
37,075
composite factor = 5
4 × 7 × 11 =
48,125
composite factor = 5 × 7 × 1,483 =
51,905
composite factor = 5 × 11 × 1,483 =
81,565
composite factor = 7 × 11 × 1,483 =
114,191
composite factor = 5
3 × 1,483 =
185,375
composite factor = 5
2 × 7 × 1,483 =
259,525
composite factor = 5
2 × 11 × 1,483 =
407,825
composite factor = 5 × 7 × 11 × 1,483 =
570,955
composite factor = 5
4 × 1,483 =
926,875
composite factor = 5
3 × 7 × 1,483 =
1,297,625
composite factor = 5
3 × 11 × 1,483 =
2,039,125
composite factor = 5
2 × 7 × 11 × 1,483 =
2,854,775
composite factor = 5
4 × 7 × 1,483 =
6,488,125
composite factor = 5
4 × 11 × 1,483 =
10,195,625
composite factor = 5
3 × 7 × 11 × 1,483 =
14,273,875
composite factor = 5
4 × 7 × 11 × 1,483 =
71,369,375
40 factors (divisors)
What times what is 71,369,375?
What number multiplied by what number equals 71,369,375?
All the combinations of any two natural numbers whose product equals 71,369,375.
1 × 71,369,375 = 71,369,375
5 × 14,273,875 = 71,369,375
7 × 10,195,625 = 71,369,375
11 × 6,488,125 = 71,369,375
25 × 2,854,775 = 71,369,375
35 × 2,039,125 = 71,369,375
55 × 1,297,625 = 71,369,375
77 × 926,875 = 71,369,375
125 × 570,955 = 71,369,375
175 × 407,825 = 71,369,375
275 × 259,525 = 71,369,375
385 × 185,375 = 71,369,375
625 × 114,191 = 71,369,375
875 × 81,565 = 71,369,375
1,375 × 51,905 = 71,369,375
1,483 × 48,125 = 71,369,375
1,925 × 37,075 = 71,369,375
4,375 × 16,313 = 71,369,375
6,875 × 10,381 = 71,369,375
7,415 × 9,625 = 71,369,375
20 unique multiplications The final answer:
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