To find all the divisors of the number 875,000,007:
- 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 875,000,007:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
875,000,007 = 32 × 72 × 1092 × 167
875,000,007 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) × (2 + 1) × (2 + 1) × (1 + 1) = 3 × 3 × 3 × 2 = 54
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 875,000,007
- 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 =
3
prime factor =
7
composite factor = 3
2 =
9
composite factor = 3 × 7 =
21
composite factor = 7
2 =
49
composite factor = 3
2 × 7 =
63
prime factor =
109
composite factor = 3 × 7
2 =
147
prime factor =
167
composite factor = 3 × 109 =
327
composite factor = 3
2 × 7
2 =
441
composite factor = 3 × 167 =
501
composite factor = 7 × 109 =
763
composite factor = 3
2 × 109 =
981
composite factor = 7 × 167 =
1,169
composite factor = 3
2 × 167 =
1,503
composite factor = 3 × 7 × 109 =
2,289
composite factor = 3 × 7 × 167 =
3,507
composite factor = 7
2 × 109 =
5,341
composite factor = 3
2 × 7 × 109 =
6,867
composite factor = 7
2 × 167 =
8,183
composite factor = 3
2 × 7 × 167 =
10,521
composite factor = 109
2 =
11,881
composite factor = 3 × 7
2 × 109 =
16,023
composite factor = 109 × 167 =
18,203
composite factor = 3 × 7
2 × 167 =
24,549
This list continues below...
... This list continues from above
composite factor = 3 × 109
2 =
35,643
composite factor = 3
2 × 7
2 × 109 =
48,069
composite factor = 3 × 109 × 167 =
54,609
composite factor = 3
2 × 7
2 × 167 =
73,647
composite factor = 7 × 109
2 =
83,167
composite factor = 3
2 × 109
2 =
106,929
composite factor = 7 × 109 × 167 =
127,421
composite factor = 3
2 × 109 × 167 =
163,827
composite factor = 3 × 7 × 109
2 =
249,501
composite factor = 3 × 7 × 109 × 167 =
382,263
composite factor = 7
2 × 109
2 =
582,169
composite factor = 3
2 × 7 × 109
2 =
748,503
composite factor = 7
2 × 109 × 167 =
891,947
composite factor = 3
2 × 7 × 109 × 167 =
1,146,789
composite factor = 3 × 7
2 × 109
2 =
1,746,507
composite factor = 109
2 × 167 =
1,984,127
composite factor = 3 × 7
2 × 109 × 167 =
2,675,841
composite factor = 3
2 × 7
2 × 109
2 =
5,239,521
composite factor = 3 × 109
2 × 167 =
5,952,381
composite factor = 3
2 × 7
2 × 109 × 167 =
8,027,523
composite factor = 7 × 109
2 × 167 =
13,888,889
composite factor = 3
2 × 109
2 × 167 =
17,857,143
composite factor = 3 × 7 × 109
2 × 167 =
41,666,667
composite factor = 7
2 × 109
2 × 167 =
97,222,223
composite factor = 3
2 × 7 × 109
2 × 167 =
125,000,001
composite factor = 3 × 7
2 × 109
2 × 167 =
291,666,669
composite factor = 3
2 × 7
2 × 109
2 × 167 =
875,000,007
54 factors (divisors)
What times what is 875,000,007?
What number multiplied by what number equals 875,000,007?
All the combinations of any two natural numbers whose product equals 875,000,007.
1 × 875,000,007 = 875,000,007
3 × 291,666,669 = 875,000,007
7 × 125,000,001 = 875,000,007
9 × 97,222,223 = 875,000,007
21 × 41,666,667 = 875,000,007
49 × 17,857,143 = 875,000,007
63 × 13,888,889 = 875,000,007
109 × 8,027,523 = 875,000,007
147 × 5,952,381 = 875,000,007
167 × 5,239,521 = 875,000,007
327 × 2,675,841 = 875,000,007
441 × 1,984,127 = 875,000,007
501 × 1,746,507 = 875,000,007
763 × 1,146,789 = 875,000,007
981 × 891,947 = 875,000,007
1,169 × 748,503 = 875,000,007
1,503 × 582,169 = 875,000,007
2,289 × 382,263 = 875,000,007
3,507 × 249,501 = 875,000,007
5,341 × 163,827 = 875,000,007
6,867 × 127,421 = 875,000,007
8,183 × 106,929 = 875,000,007
10,521 × 83,167 = 875,000,007
11,881 × 73,647 = 875,000,007
16,023 × 54,609 = 875,000,007
18,203 × 48,069 = 875,000,007
24,549 × 35,643 = 875,000,007
27 unique multiplications The final answer:
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