To find all the divisors of the number 294,880:
- 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 294,880:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
294,880 = 25 × 5 × 19 × 97
294,880 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 = (5 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 6 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 294,880
- 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
composite factor = 2
4 =
16
prime factor =
19
composite factor = 2
2 × 5 =
20
composite factor = 2
5 =
32
composite factor = 2 × 19 =
38
composite factor = 2
3 × 5 =
40
composite factor = 2
2 × 19 =
76
composite factor = 2
4 × 5 =
80
composite factor = 5 × 19 =
95
prime factor =
97
composite factor = 2
3 × 19 =
152
composite factor = 2
5 × 5 =
160
composite factor = 2 × 5 × 19 =
190
composite factor = 2 × 97 =
194
composite factor = 2
4 × 19 =
304
composite factor = 2
2 × 5 × 19 =
380
composite factor = 2
2 × 97 =
388
composite factor = 5 × 97 =
485
This list continues below...
... This list continues from above
composite factor = 2
5 × 19 =
608
composite factor = 2
3 × 5 × 19 =
760
composite factor = 2
3 × 97 =
776
composite factor = 2 × 5 × 97 =
970
composite factor = 2
4 × 5 × 19 =
1,520
composite factor = 2
4 × 97 =
1,552
composite factor = 19 × 97 =
1,843
composite factor = 2
2 × 5 × 97 =
1,940
composite factor = 2
5 × 5 × 19 =
3,040
composite factor = 2
5 × 97 =
3,104
composite factor = 2 × 19 × 97 =
3,686
composite factor = 2
3 × 5 × 97 =
3,880
composite factor = 2
2 × 19 × 97 =
7,372
composite factor = 2
4 × 5 × 97 =
7,760
composite factor = 5 × 19 × 97 =
9,215
composite factor = 2
3 × 19 × 97 =
14,744
composite factor = 2
5 × 5 × 97 =
15,520
composite factor = 2 × 5 × 19 × 97 =
18,430
composite factor = 2
4 × 19 × 97 =
29,488
composite factor = 2
2 × 5 × 19 × 97 =
36,860
composite factor = 2
5 × 19 × 97 =
58,976
composite factor = 2
3 × 5 × 19 × 97 =
73,720
composite factor = 2
4 × 5 × 19 × 97 =
147,440
composite factor = 2
5 × 5 × 19 × 97 =
294,880
48 factors (divisors)
What times what is 294,880?
What number multiplied by what number equals 294,880?
All the combinations of any two natural numbers whose product equals 294,880.
1 × 294,880 = 294,880
2 × 147,440 = 294,880
4 × 73,720 = 294,880
5 × 58,976 = 294,880
8 × 36,860 = 294,880
10 × 29,488 = 294,880
16 × 18,430 = 294,880
19 × 15,520 = 294,880
20 × 14,744 = 294,880
32 × 9,215 = 294,880
38 × 7,760 = 294,880
40 × 7,372 = 294,880
76 × 3,880 = 294,880
80 × 3,686 = 294,880
95 × 3,104 = 294,880
97 × 3,040 = 294,880
152 × 1,940 = 294,880
160 × 1,843 = 294,880
190 × 1,552 = 294,880
194 × 1,520 = 294,880
304 × 970 = 294,880
380 × 776 = 294,880
388 × 760 = 294,880
485 × 608 = 294,880
24 unique multiplications The final answer:
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