To find all the divisors of the number 726,960:
- 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 726,960:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
726,960 = 24 × 3 × 5 × 13 × 233
726,960 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) × (1 + 1) = 5 × 2 × 2 × 2 × 2 = 80
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 726,960
- 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
3 =
8
composite factor = 2 × 5 =
10
composite factor = 2
2 × 3 =
12
prime factor =
13
composite factor = 3 × 5 =
15
composite factor = 2
4 =
16
composite factor = 2
2 × 5 =
20
composite factor = 2
3 × 3 =
24
composite factor = 2 × 13 =
26
composite factor = 2 × 3 × 5 =
30
composite factor = 3 × 13 =
39
composite factor = 2
3 × 5 =
40
composite factor = 2
4 × 3 =
48
composite factor = 2
2 × 13 =
52
composite factor = 2
2 × 3 × 5 =
60
composite factor = 5 × 13 =
65
composite factor = 2 × 3 × 13 =
78
composite factor = 2
4 × 5 =
80
composite factor = 2
3 × 13 =
104
composite factor = 2
3 × 3 × 5 =
120
composite factor = 2 × 5 × 13 =
130
composite factor = 2
2 × 3 × 13 =
156
composite factor = 3 × 5 × 13 =
195
composite factor = 2
4 × 13 =
208
prime factor =
233
composite factor = 2
4 × 3 × 5 =
240
composite factor = 2
2 × 5 × 13 =
260
composite factor = 2
3 × 3 × 13 =
312
composite factor = 2 × 3 × 5 × 13 =
390
composite factor = 2 × 233 =
466
composite factor = 2
3 × 5 × 13 =
520
composite factor = 2
4 × 3 × 13 =
624
composite factor = 3 × 233 =
699
composite factor = 2
2 × 3 × 5 × 13 =
780
This list continues below...
... This list continues from above
composite factor = 2
2 × 233 =
932
composite factor = 2
4 × 5 × 13 =
1,040
composite factor = 5 × 233 =
1,165
composite factor = 2 × 3 × 233 =
1,398
composite factor = 2
3 × 3 × 5 × 13 =
1,560
composite factor = 2
3 × 233 =
1,864
composite factor = 2 × 5 × 233 =
2,330
composite factor = 2
2 × 3 × 233 =
2,796
composite factor = 13 × 233 =
3,029
composite factor = 2
4 × 3 × 5 × 13 =
3,120
composite factor = 3 × 5 × 233 =
3,495
composite factor = 2
4 × 233 =
3,728
composite factor = 2
2 × 5 × 233 =
4,660
composite factor = 2
3 × 3 × 233 =
5,592
composite factor = 2 × 13 × 233 =
6,058
composite factor = 2 × 3 × 5 × 233 =
6,990
composite factor = 3 × 13 × 233 =
9,087
composite factor = 2
3 × 5 × 233 =
9,320
composite factor = 2
4 × 3 × 233 =
11,184
composite factor = 2
2 × 13 × 233 =
12,116
composite factor = 2
2 × 3 × 5 × 233 =
13,980
composite factor = 5 × 13 × 233 =
15,145
composite factor = 2 × 3 × 13 × 233 =
18,174
composite factor = 2
4 × 5 × 233 =
18,640
composite factor = 2
3 × 13 × 233 =
24,232
composite factor = 2
3 × 3 × 5 × 233 =
27,960
composite factor = 2 × 5 × 13 × 233 =
30,290
composite factor = 2
2 × 3 × 13 × 233 =
36,348
composite factor = 3 × 5 × 13 × 233 =
45,435
composite factor = 2
4 × 13 × 233 =
48,464
composite factor = 2
4 × 3 × 5 × 233 =
55,920
composite factor = 2
2 × 5 × 13 × 233 =
60,580
composite factor = 2
3 × 3 × 13 × 233 =
72,696
composite factor = 2 × 3 × 5 × 13 × 233 =
90,870
composite factor = 2
3 × 5 × 13 × 233 =
121,160
composite factor = 2
4 × 3 × 13 × 233 =
145,392
composite factor = 2
2 × 3 × 5 × 13 × 233 =
181,740
composite factor = 2
4 × 5 × 13 × 233 =
242,320
composite factor = 2
3 × 3 × 5 × 13 × 233 =
363,480
composite factor = 2
4 × 3 × 5 × 13 × 233 =
726,960
80 factors (divisors)
What times what is 726,960?
What number multiplied by what number equals 726,960?
All the combinations of any two natural numbers whose product equals 726,960.
1 × 726,960 = 726,960
2 × 363,480 = 726,960
3 × 242,320 = 726,960
4 × 181,740 = 726,960
5 × 145,392 = 726,960
6 × 121,160 = 726,960
8 × 90,870 = 726,960
10 × 72,696 = 726,960
12 × 60,580 = 726,960
13 × 55,920 = 726,960
15 × 48,464 = 726,960
16 × 45,435 = 726,960
20 × 36,348 = 726,960
24 × 30,290 = 726,960
26 × 27,960 = 726,960
30 × 24,232 = 726,960
39 × 18,640 = 726,960
40 × 18,174 = 726,960
48 × 15,145 = 726,960
52 × 13,980 = 726,960
60 × 12,116 = 726,960
65 × 11,184 = 726,960
78 × 9,320 = 726,960
80 × 9,087 = 726,960
104 × 6,990 = 726,960
120 × 6,058 = 726,960
130 × 5,592 = 726,960
156 × 4,660 = 726,960
195 × 3,728 = 726,960
208 × 3,495 = 726,960
233 × 3,120 = 726,960
240 × 3,029 = 726,960
260 × 2,796 = 726,960
312 × 2,330 = 726,960
390 × 1,864 = 726,960
466 × 1,560 = 726,960
520 × 1,398 = 726,960
624 × 1,165 = 726,960
699 × 1,040 = 726,960
780 × 932 = 726,960
40 unique multiplications The final answer:
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