To find all the divisors of the number 1,450,399,980:
- 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 1,450,399,980:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
1,450,399,980 = 22 × 3 × 5 × 107 × 225,919
1,450,399,980 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 1,450,399,980
- 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
prime factor =
3
composite factor = 2
2 =
4
prime factor =
5
composite factor = 2 × 3 =
6
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
composite factor = 3 × 5 =
15
composite factor = 2
2 × 5 =
20
composite factor = 2 × 3 × 5 =
30
composite factor = 2
2 × 3 × 5 =
60
prime factor =
107
composite factor = 2 × 107 =
214
composite factor = 3 × 107 =
321
composite factor = 2
2 × 107 =
428
composite factor = 5 × 107 =
535
composite factor = 2 × 3 × 107 =
642
composite factor = 2 × 5 × 107 =
1,070
composite factor = 2
2 × 3 × 107 =
1,284
composite factor = 3 × 5 × 107 =
1,605
composite factor = 2
2 × 5 × 107 =
2,140
composite factor = 2 × 3 × 5 × 107 =
3,210
composite factor = 2
2 × 3 × 5 × 107 =
6,420
This list continues below...
... This list continues from above
prime factor =
225,919
composite factor = 2 × 225,919 =
451,838
composite factor = 3 × 225,919 =
677,757
composite factor = 2
2 × 225,919 =
903,676
composite factor = 5 × 225,919 =
1,129,595
composite factor = 2 × 3 × 225,919 =
1,355,514
composite factor = 2 × 5 × 225,919 =
2,259,190
composite factor = 2
2 × 3 × 225,919 =
2,711,028
composite factor = 3 × 5 × 225,919 =
3,388,785
composite factor = 2
2 × 5 × 225,919 =
4,518,380
composite factor = 2 × 3 × 5 × 225,919 =
6,777,570
composite factor = 2
2 × 3 × 5 × 225,919 =
13,555,140
composite factor = 107 × 225,919 =
24,173,333
composite factor = 2 × 107 × 225,919 =
48,346,666
composite factor = 3 × 107 × 225,919 =
72,519,999
composite factor = 2
2 × 107 × 225,919 =
96,693,332
composite factor = 5 × 107 × 225,919 =
120,866,665
composite factor = 2 × 3 × 107 × 225,919 =
145,039,998
composite factor = 2 × 5 × 107 × 225,919 =
241,733,330
composite factor = 2
2 × 3 × 107 × 225,919 =
290,079,996
composite factor = 3 × 5 × 107 × 225,919 =
362,599,995
composite factor = 2
2 × 5 × 107 × 225,919 =
483,466,660
composite factor = 2 × 3 × 5 × 107 × 225,919 =
725,199,990
composite factor = 2
2 × 3 × 5 × 107 × 225,919 =
1,450,399,980
48 factors (divisors)
What times what is 1,450,399,980?
What number multiplied by what number equals 1,450,399,980?
All the combinations of any two natural numbers whose product equals 1,450,399,980.
1 × 1,450,399,980 = 1,450,399,980
2 × 725,199,990 = 1,450,399,980
3 × 483,466,660 = 1,450,399,980
4 × 362,599,995 = 1,450,399,980
5 × 290,079,996 = 1,450,399,980
6 × 241,733,330 = 1,450,399,980
10 × 145,039,998 = 1,450,399,980
12 × 120,866,665 = 1,450,399,980
15 × 96,693,332 = 1,450,399,980
20 × 72,519,999 = 1,450,399,980
30 × 48,346,666 = 1,450,399,980
60 × 24,173,333 = 1,450,399,980
107 × 13,555,140 = 1,450,399,980
214 × 6,777,570 = 1,450,399,980
321 × 4,518,380 = 1,450,399,980
428 × 3,388,785 = 1,450,399,980
535 × 2,711,028 = 1,450,399,980
642 × 2,259,190 = 1,450,399,980
1,070 × 1,355,514 = 1,450,399,980
1,284 × 1,129,595 = 1,450,399,980
1,605 × 903,676 = 1,450,399,980
2,140 × 677,757 = 1,450,399,980
3,210 × 451,838 = 1,450,399,980
6,420 × 225,919 = 1,450,399,980
24 unique multiplications The final answer:
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