A:
Positive:
1 x 770214555 x 154042917 x 1100306535 x 220061353 x 1453235265 x 290647371 x 2076051855 x 41521
Negative:
-1 x -77021455-5 x -15404291-7 x -11003065-35 x -2200613-53 x -1453235-265 x -290647-371 x -207605-1855 x -41521
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 77,021,455, 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 | 77,021,455 | |
| -1 | -77,021,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,021,455.
Example:
1 x 77,021,455 = 77,021,455
and
-1 x -77,021,455 = 77,021,455
Notice both answers equal 77,021,455
With that explanation out of the way, let's continue. Next, we take the number 77,021,455 and divide it by 2:
77,021,455 ÷ 2 = 38,510,727.5
If the quotient is a whole number, then 2 and 38,510,727.5 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 | 77,021,455 | |
| -1 | -77,021,455 |
Now, we try dividing 77,021,455 by 3:
77,021,455 ÷ 3 = 25,673,818.3333
If the quotient is a whole number, then 3 and 25,673,818.3333 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 | 77,021,455 | |
| -1 | -77,021,455 |
Let's try dividing by 4:
77,021,455 ÷ 4 = 19,255,363.75
If the quotient is a whole number, then 4 and 19,255,363.75 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 | 77,021,455 | |
| -1 | 77,021,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 53 | 265 | 371 | 1,855 | 41,521 | 207,605 | 290,647 | 1,453,235 | 2,200,613 | 11,003,065 | 15,404,291 | 77,021,455 |
| -1 | -5 | -7 | -35 | -53 | -265 | -371 | -1,855 | -41,521 | -207,605 | -290,647 | -1,453,235 | -2,200,613 | -11,003,065 | -15,404,291 | -77,021,455 |
Here are some more numbers to try:
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