To find all the divisors of the number 3,707,440:
- 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 3,707,440:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
3,707,440 = 24 × 5 × 112 × 383
3,707,440 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) × (2 + 1) × (1 + 1) = 5 × 2 × 3 × 2 = 60
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 3,707,440
- 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 =
5
composite factor = 2
3 =
8
composite factor = 2 × 5 =
10
prime factor =
11
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2 × 11 =
22
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 11 =
44
composite factor = 5 × 11 =
55
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 11 =
88
composite factor = 2 × 5 × 11 =
110
composite factor = 11
2 =
121
composite factor = 2
4 × 11 =
176
composite factor = 2
2 × 5 × 11 =
220
composite factor = 2 × 11
2 =
242
prime factor =
383
composite factor = 2
3 × 5 × 11 =
440
composite factor = 2
2 × 11
2 =
484
composite factor = 5 × 11
2 =
605
composite factor = 2 × 383 =
766
composite factor = 2
4 × 5 × 11 =
880
composite factor = 2
3 × 11
2 =
968
composite factor = 2 × 5 × 11
2 =
1,210
composite factor = 2
2 × 383 =
1,532
composite factor = 5 × 383 =
1,915
This list continues below...
... This list continues from above
composite factor = 2
4 × 11
2 =
1,936
composite factor = 2
2 × 5 × 11
2 =
2,420
composite factor = 2
3 × 383 =
3,064
composite factor = 2 × 5 × 383 =
3,830
composite factor = 11 × 383 =
4,213
composite factor = 2
3 × 5 × 11
2 =
4,840
composite factor = 2
4 × 383 =
6,128
composite factor = 2
2 × 5 × 383 =
7,660
composite factor = 2 × 11 × 383 =
8,426
composite factor = 2
4 × 5 × 11
2 =
9,680
composite factor = 2
3 × 5 × 383 =
15,320
composite factor = 2
2 × 11 × 383 =
16,852
composite factor = 5 × 11 × 383 =
21,065
composite factor = 2
4 × 5 × 383 =
30,640
composite factor = 2
3 × 11 × 383 =
33,704
composite factor = 2 × 5 × 11 × 383 =
42,130
composite factor = 11
2 × 383 =
46,343
composite factor = 2
4 × 11 × 383 =
67,408
composite factor = 2
2 × 5 × 11 × 383 =
84,260
composite factor = 2 × 11
2 × 383 =
92,686
composite factor = 2
3 × 5 × 11 × 383 =
168,520
composite factor = 2
2 × 11
2 × 383 =
185,372
composite factor = 5 × 11
2 × 383 =
231,715
composite factor = 2
4 × 5 × 11 × 383 =
337,040
composite factor = 2
3 × 11
2 × 383 =
370,744
composite factor = 2 × 5 × 11
2 × 383 =
463,430
composite factor = 2
4 × 11
2 × 383 =
741,488
composite factor = 2
2 × 5 × 11
2 × 383 =
926,860
composite factor = 2
3 × 5 × 11
2 × 383 =
1,853,720
composite factor = 2
4 × 5 × 11
2 × 383 =
3,707,440
60 factors (divisors)
What times what is 3,707,440?
What number multiplied by what number equals 3,707,440?
All the combinations of any two natural numbers whose product equals 3,707,440.
1 × 3,707,440 = 3,707,440
2 × 1,853,720 = 3,707,440
4 × 926,860 = 3,707,440
5 × 741,488 = 3,707,440
8 × 463,430 = 3,707,440
10 × 370,744 = 3,707,440
11 × 337,040 = 3,707,440
16 × 231,715 = 3,707,440
20 × 185,372 = 3,707,440
22 × 168,520 = 3,707,440
40 × 92,686 = 3,707,440
44 × 84,260 = 3,707,440
55 × 67,408 = 3,707,440
80 × 46,343 = 3,707,440
88 × 42,130 = 3,707,440
110 × 33,704 = 3,707,440
121 × 30,640 = 3,707,440
176 × 21,065 = 3,707,440
220 × 16,852 = 3,707,440
242 × 15,320 = 3,707,440
383 × 9,680 = 3,707,440
440 × 8,426 = 3,707,440
484 × 7,660 = 3,707,440
605 × 6,128 = 3,707,440
766 × 4,840 = 3,707,440
880 × 4,213 = 3,707,440
968 × 3,830 = 3,707,440
1,210 × 3,064 = 3,707,440
1,532 × 2,420 = 3,707,440
1,915 × 1,936 = 3,707,440
30 unique multiplications The final answer:
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