A:
Positive:
1 x 776030455 x 1552060913 x 596946517 x 456488565 x 119389385 x 912977221 x 3511451105 x 70229
Negative:
-1 x -77603045-5 x -15520609-13 x -5969465-17 x -4564885-65 x -1193893-85 x -912977-221 x -351145-1105 x -70229
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 77,603,045, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 77,603,045 | |
| -1 | -77,603,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,603,045.
Example:
1 x 77,603,045 = 77,603,045
and
-1 x -77,603,045 = 77,603,045
Notice both answers equal 77,603,045
With that explanation out of the way, let's continue. Next, we take the number 77,603,045 and divide it by 2:
77,603,045 ÷ 2 = 38,801,522.5
If the quotient is a whole number, then 2 and 38,801,522.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 77,603,045 | |
| -1 | -77,603,045 |
Now, we try dividing 77,603,045 by 3:
77,603,045 ÷ 3 = 25,867,681.6667
If the quotient is a whole number, then 3 and 25,867,681.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 77,603,045 | |
| -1 | -77,603,045 |
Let's try dividing by 4:
77,603,045 ÷ 4 = 19,400,761.25
If the quotient is a whole number, then 4 and 19,400,761.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 77,603,045 | |
| -1 | 77,603,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 221 | 1,105 | 70,229 | 351,145 | 912,977 | 1,193,893 | 4,564,885 | 5,969,465 | 15,520,609 | 77,603,045 |
| -1 | -5 | -13 | -17 | -65 | -85 | -221 | -1,105 | -70,229 | -351,145 | -912,977 | -1,193,893 | -4,564,885 | -5,969,465 | -15,520,609 | -77,603,045 |
Here are some more numbers to try:
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