To find all the divisors of the number 7,375,698:
- 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 7,375,698:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
7,375,698 = 2 × 34 × 11 × 4,139
7,375,698 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 = (1 + 1) × (4 + 1) × (1 + 1) × (1 + 1) = 2 × 5 × 2 × 2 = 40
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 7,375,698
- 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 × 3 =
6
composite factor = 3
2 =
9
prime factor =
11
composite factor = 2 × 3
2 =
18
composite factor = 2 × 11 =
22
composite factor = 3
3 =
27
composite factor = 3 × 11 =
33
composite factor = 2 × 3
3 =
54
composite factor = 2 × 3 × 11 =
66
composite factor = 3
4 =
81
composite factor = 3
2 × 11 =
99
composite factor = 2 × 3
4 =
162
composite factor = 2 × 3
2 × 11 =
198
composite factor = 3
3 × 11 =
297
composite factor = 2 × 3
3 × 11 =
594
composite factor = 3
4 × 11 =
891
composite factor = 2 × 3
4 × 11 =
1,782
This list continues below...
... This list continues from above
prime factor =
4,139
composite factor = 2 × 4,139 =
8,278
composite factor = 3 × 4,139 =
12,417
composite factor = 2 × 3 × 4,139 =
24,834
composite factor = 3
2 × 4,139 =
37,251
composite factor = 11 × 4,139 =
45,529
composite factor = 2 × 3
2 × 4,139 =
74,502
composite factor = 2 × 11 × 4,139 =
91,058
composite factor = 3
3 × 4,139 =
111,753
composite factor = 3 × 11 × 4,139 =
136,587
composite factor = 2 × 3
3 × 4,139 =
223,506
composite factor = 2 × 3 × 11 × 4,139 =
273,174
composite factor = 3
4 × 4,139 =
335,259
composite factor = 3
2 × 11 × 4,139 =
409,761
composite factor = 2 × 3
4 × 4,139 =
670,518
composite factor = 2 × 3
2 × 11 × 4,139 =
819,522
composite factor = 3
3 × 11 × 4,139 =
1,229,283
composite factor = 2 × 3
3 × 11 × 4,139 =
2,458,566
composite factor = 3
4 × 11 × 4,139 =
3,687,849
composite factor = 2 × 3
4 × 11 × 4,139 =
7,375,698
40 factors (divisors)
What times what is 7,375,698?
What number multiplied by what number equals 7,375,698?
All the combinations of any two natural numbers whose product equals 7,375,698.
1 × 7,375,698 = 7,375,698
2 × 3,687,849 = 7,375,698
3 × 2,458,566 = 7,375,698
6 × 1,229,283 = 7,375,698
9 × 819,522 = 7,375,698
11 × 670,518 = 7,375,698
18 × 409,761 = 7,375,698
22 × 335,259 = 7,375,698
27 × 273,174 = 7,375,698
33 × 223,506 = 7,375,698
54 × 136,587 = 7,375,698
66 × 111,753 = 7,375,698
81 × 91,058 = 7,375,698
99 × 74,502 = 7,375,698
162 × 45,529 = 7,375,698
198 × 37,251 = 7,375,698
297 × 24,834 = 7,375,698
594 × 12,417 = 7,375,698
891 × 8,278 = 7,375,698
1,782 × 4,139 = 7,375,698
20 unique multiplications The final answer:
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