A:
Positive:
1 x 4022234517 x 5746049317 x 23660203119 x 3380029401 x 10030512807 x 1432936817 x 590038429 x 47719
Negative:
-1 x -402223451-7 x -57460493-17 x -23660203-119 x -3380029-401 x -1003051-2807 x -143293-6817 x -59003-8429 x -47719
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 402,223,451, 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 | 402,223,451 | |
| -1 | -402,223,451 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,223,451.
Example:
1 x 402,223,451 = 402,223,451
and
-1 x -402,223,451 = 402,223,451
Notice both answers equal 402,223,451
With that explanation out of the way, let's continue. Next, we take the number 402,223,451 and divide it by 2:
402,223,451 ÷ 2 = 201,111,725.5
If the quotient is a whole number, then 2 and 201,111,725.5 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 | 402,223,451 | |
| -1 | -402,223,451 |
Now, we try dividing 402,223,451 by 3:
402,223,451 ÷ 3 = 134,074,483.6667
If the quotient is a whole number, then 3 and 134,074,483.6667 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 | 402,223,451 | |
| -1 | -402,223,451 |
Let's try dividing by 4:
402,223,451 ÷ 4 = 100,555,862.75
If the quotient is a whole number, then 4 and 100,555,862.75 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 | 402,223,451 | |
| -1 | 402,223,451 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 401 | 2,807 | 6,817 | 8,429 | 47,719 | 59,003 | 143,293 | 1,003,051 | 3,380,029 | 23,660,203 | 57,460,493 | 402,223,451 |
| -1 | -7 | -17 | -119 | -401 | -2,807 | -6,817 | -8,429 | -47,719 | -59,003 | -143,293 | -1,003,051 | -3,380,029 | -23,660,203 | -57,460,493 | -402,223,451 |
Here are some more numbers to try:
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