To find all the divisors of the number 35,279,888:
- 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 35,279,888:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
35,279,888 = 24 × 7 × 269 × 1,171
35,279,888 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 35,279,888
- 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 =
7
composite factor = 2
3 =
8
composite factor = 2 × 7 =
14
composite factor = 2
4 =
16
composite factor = 2
2 × 7 =
28
composite factor = 2
3 × 7 =
56
composite factor = 2
4 × 7 =
112
prime factor =
269
composite factor = 2 × 269 =
538
composite factor = 2
2 × 269 =
1,076
prime factor =
1,171
composite factor = 7 × 269 =
1,883
composite factor = 2
3 × 269 =
2,152
composite factor = 2 × 1,171 =
2,342
composite factor = 2 × 7 × 269 =
3,766
composite factor = 2
4 × 269 =
4,304
composite factor = 2
2 × 1,171 =
4,684
This list continues below...
... This list continues from above
composite factor = 2
2 × 7 × 269 =
7,532
composite factor = 7 × 1,171 =
8,197
composite factor = 2
3 × 1,171 =
9,368
composite factor = 2
3 × 7 × 269 =
15,064
composite factor = 2 × 7 × 1,171 =
16,394
composite factor = 2
4 × 1,171 =
18,736
composite factor = 2
4 × 7 × 269 =
30,128
composite factor = 2
2 × 7 × 1,171 =
32,788
composite factor = 2
3 × 7 × 1,171 =
65,576
composite factor = 2
4 × 7 × 1,171 =
131,152
composite factor = 269 × 1,171 =
314,999
composite factor = 2 × 269 × 1,171 =
629,998
composite factor = 2
2 × 269 × 1,171 =
1,259,996
composite factor = 7 × 269 × 1,171 =
2,204,993
composite factor = 2
3 × 269 × 1,171 =
2,519,992
composite factor = 2 × 7 × 269 × 1,171 =
4,409,986
composite factor = 2
4 × 269 × 1,171 =
5,039,984
composite factor = 2
2 × 7 × 269 × 1,171 =
8,819,972
composite factor = 2
3 × 7 × 269 × 1,171 =
17,639,944
composite factor = 2
4 × 7 × 269 × 1,171 =
35,279,888
40 factors (divisors)
What times what is 35,279,888?
What number multiplied by what number equals 35,279,888?
All the combinations of any two natural numbers whose product equals 35,279,888.
1 × 35,279,888 = 35,279,888
2 × 17,639,944 = 35,279,888
4 × 8,819,972 = 35,279,888
7 × 5,039,984 = 35,279,888
8 × 4,409,986 = 35,279,888
14 × 2,519,992 = 35,279,888
16 × 2,204,993 = 35,279,888
28 × 1,259,996 = 35,279,888
56 × 629,998 = 35,279,888
112 × 314,999 = 35,279,888
269 × 131,152 = 35,279,888
538 × 65,576 = 35,279,888
1,076 × 32,788 = 35,279,888
1,171 × 30,128 = 35,279,888
1,883 × 18,736 = 35,279,888
2,152 × 16,394 = 35,279,888
2,342 × 15,064 = 35,279,888
3,766 × 9,368 = 35,279,888
4,304 × 8,197 = 35,279,888
4,684 × 7,532 = 35,279,888
20 unique multiplications The final answer:
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