To find all the divisors of the number 121,311,476:
- 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 121,311,476:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
121,311,476 = 22 × 11 × 13 × 23 × 9,221
121,311,476 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 121,311,476
- 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
composite factor = 2
2 =
4
prime factor =
11
prime factor =
13
composite factor = 2 × 11 =
22
prime factor =
23
composite factor = 2 × 13 =
26
composite factor = 2
2 × 11 =
44
composite factor = 2 × 23 =
46
composite factor = 2
2 × 13 =
52
composite factor = 2
2 × 23 =
92
composite factor = 11 × 13 =
143
composite factor = 11 × 23 =
253
composite factor = 2 × 11 × 13 =
286
composite factor = 13 × 23 =
299
composite factor = 2 × 11 × 23 =
506
composite factor = 2
2 × 11 × 13 =
572
composite factor = 2 × 13 × 23 =
598
composite factor = 2
2 × 11 × 23 =
1,012
composite factor = 2
2 × 13 × 23 =
1,196
composite factor = 11 × 13 × 23 =
3,289
composite factor = 2 × 11 × 13 × 23 =
6,578
prime factor =
9,221
This list continues below...
... This list continues from above
composite factor = 2
2 × 11 × 13 × 23 =
13,156
composite factor = 2 × 9,221 =
18,442
composite factor = 2
2 × 9,221 =
36,884
composite factor = 11 × 9,221 =
101,431
composite factor = 13 × 9,221 =
119,873
composite factor = 2 × 11 × 9,221 =
202,862
composite factor = 23 × 9,221 =
212,083
composite factor = 2 × 13 × 9,221 =
239,746
composite factor = 2
2 × 11 × 9,221 =
405,724
composite factor = 2 × 23 × 9,221 =
424,166
composite factor = 2
2 × 13 × 9,221 =
479,492
composite factor = 2
2 × 23 × 9,221 =
848,332
composite factor = 11 × 13 × 9,221 =
1,318,603
composite factor = 11 × 23 × 9,221 =
2,332,913
composite factor = 2 × 11 × 13 × 9,221 =
2,637,206
composite factor = 13 × 23 × 9,221 =
2,757,079
composite factor = 2 × 11 × 23 × 9,221 =
4,665,826
composite factor = 2
2 × 11 × 13 × 9,221 =
5,274,412
composite factor = 2 × 13 × 23 × 9,221 =
5,514,158
composite factor = 2
2 × 11 × 23 × 9,221 =
9,331,652
composite factor = 2
2 × 13 × 23 × 9,221 =
11,028,316
composite factor = 11 × 13 × 23 × 9,221 =
30,327,869
composite factor = 2 × 11 × 13 × 23 × 9,221 =
60,655,738
composite factor = 2
2 × 11 × 13 × 23 × 9,221 =
121,311,476
48 factors (divisors)
What times what is 121,311,476?
What number multiplied by what number equals 121,311,476?
All the combinations of any two natural numbers whose product equals 121,311,476.
1 × 121,311,476 = 121,311,476
2 × 60,655,738 = 121,311,476
4 × 30,327,869 = 121,311,476
11 × 11,028,316 = 121,311,476
13 × 9,331,652 = 121,311,476
22 × 5,514,158 = 121,311,476
23 × 5,274,412 = 121,311,476
26 × 4,665,826 = 121,311,476
44 × 2,757,079 = 121,311,476
46 × 2,637,206 = 121,311,476
52 × 2,332,913 = 121,311,476
92 × 1,318,603 = 121,311,476
143 × 848,332 = 121,311,476
253 × 479,492 = 121,311,476
286 × 424,166 = 121,311,476
299 × 405,724 = 121,311,476
506 × 239,746 = 121,311,476
572 × 212,083 = 121,311,476
598 × 202,862 = 121,311,476
1,012 × 119,873 = 121,311,476
1,196 × 101,431 = 121,311,476
3,289 × 36,884 = 121,311,476
6,578 × 18,442 = 121,311,476
9,221 × 13,156 = 121,311,476
24 unique multiplications The final answer:
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