To find all the divisors of the number 499,999,999,972:
- 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 499,999,999,972:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
499,999,999,972 = 22 × 11 × 107 × 661 × 160,669
499,999,999,972 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 499,999,999,972
- 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
composite factor = 2 × 11 =
22
composite factor = 2
2 × 11 =
44
prime factor =
107
composite factor = 2 × 107 =
214
composite factor = 2
2 × 107 =
428
prime factor =
661
composite factor = 11 × 107 =
1,177
composite factor = 2 × 661 =
1,322
composite factor = 2 × 11 × 107 =
2,354
composite factor = 2
2 × 661 =
2,644
composite factor = 2
2 × 11 × 107 =
4,708
composite factor = 11 × 661 =
7,271
composite factor = 2 × 11 × 661 =
14,542
composite factor = 2
2 × 11 × 661 =
29,084
composite factor = 107 × 661 =
70,727
composite factor = 2 × 107 × 661 =
141,454
prime factor =
160,669
composite factor = 2
2 × 107 × 661 =
282,908
composite factor = 2 × 160,669 =
321,338
composite factor = 2
2 × 160,669 =
642,676
This list continues below...
... This list continues from above
composite factor = 11 × 107 × 661 =
777,997
composite factor = 2 × 11 × 107 × 661 =
1,555,994
composite factor = 11 × 160,669 =
1,767,359
composite factor = 2
2 × 11 × 107 × 661 =
3,111,988
composite factor = 2 × 11 × 160,669 =
3,534,718
composite factor = 2
2 × 11 × 160,669 =
7,069,436
composite factor = 107 × 160,669 =
17,191,583
composite factor = 2 × 107 × 160,669 =
34,383,166
composite factor = 2
2 × 107 × 160,669 =
68,766,332
composite factor = 661 × 160,669 =
106,202,209
composite factor = 11 × 107 × 160,669 =
189,107,413
composite factor = 2 × 661 × 160,669 =
212,404,418
composite factor = 2 × 11 × 107 × 160,669 =
378,214,826
composite factor = 2
2 × 661 × 160,669 =
424,808,836
composite factor = 2
2 × 11 × 107 × 160,669 =
756,429,652
composite factor = 11 × 661 × 160,669 =
1,168,224,299
composite factor = 2 × 11 × 661 × 160,669 =
2,336,448,598
composite factor = 2
2 × 11 × 661 × 160,669 =
4,672,897,196
composite factor = 107 × 661 × 160,669 =
11,363,636,363
composite factor = 2 × 107 × 661 × 160,669 =
22,727,272,726
composite factor = 2
2 × 107 × 661 × 160,669 =
45,454,545,452
composite factor = 11 × 107 × 661 × 160,669 =
124,999,999,993
composite factor = 2 × 11 × 107 × 661 × 160,669 =
249,999,999,986
composite factor = 2
2 × 11 × 107 × 661 × 160,669 =
499,999,999,972
48 factors (divisors)
What times what is 499,999,999,972?
What number multiplied by what number equals 499,999,999,972?
All the combinations of any two natural numbers whose product equals 499,999,999,972.
1 × 499,999,999,972 = 499,999,999,972
2 × 249,999,999,986 = 499,999,999,972
4 × 124,999,999,993 = 499,999,999,972
11 × 45,454,545,452 = 499,999,999,972
22 × 22,727,272,726 = 499,999,999,972
44 × 11,363,636,363 = 499,999,999,972
107 × 4,672,897,196 = 499,999,999,972
214 × 2,336,448,598 = 499,999,999,972
428 × 1,168,224,299 = 499,999,999,972
661 × 756,429,652 = 499,999,999,972
1,177 × 424,808,836 = 499,999,999,972
1,322 × 378,214,826 = 499,999,999,972
2,354 × 212,404,418 = 499,999,999,972
2,644 × 189,107,413 = 499,999,999,972
4,708 × 106,202,209 = 499,999,999,972
7,271 × 68,766,332 = 499,999,999,972
14,542 × 34,383,166 = 499,999,999,972
29,084 × 17,191,583 = 499,999,999,972
70,727 × 7,069,436 = 499,999,999,972
141,454 × 3,534,718 = 499,999,999,972
160,669 × 3,111,988 = 499,999,999,972
282,908 × 1,767,359 = 499,999,999,972
321,338 × 1,555,994 = 499,999,999,972
642,676 × 777,997 = 499,999,999,972
24 unique multiplications The final answer:
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