Every integer is divisible by 1. So 1 is a factor.
The number ends in a 2 and so is even. Therefore, 2 is a factor.
The sum of the digits is 3+1+2 = 6 which is divisible by 3 so 3 is a factor.
2 and 3 are both factors so 2*3 = 6 is a factor.
So, four factors are 1, 2, 3 and 6.
The factors of 312 are 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, and 312
If a number is divisible by 3, and also by 4, then it is divisible by 12 - so you might use the divisibility rules for those two numbers. Although it might be simpler just to perform the division.
A number is divisible by 4 if and only if its last two digits are divisible by 4. For example, 53112 is divisible by 4, because the last two digits (12) are divisible by 4.
To test divisibility for 20, you need to use the tests for divisibility by 4 and 5.The test for divisibility by 4 is that the last 2 digits of the number, given as a 2-digit number, are divisible by 4.Example for 4:We are testing the number 11042.42/4 = 10.5 which is not a whole number. Therefore 11042 is not divisible by 4.The test for divisibility by 5 is that the last digit of the number is either 5 or 0.
78
1, 2, 3 and 4
The divisibility rule for 4 states that a number is divisible by 4 if the number formed by its last two digits is divisible by 4. For example, in the number 312, you only need to consider the last two digits, which are 12. Since 12 is divisible by 4, the entire number 312 is also divisible by 4.
A number is a multiple of 312 if it's a multiple of 3, 8 and 13 at the same time For example 1,248 is a multiple of 312 because 1 + 2 + 4 + 8 = 15, which means it's a multiple of 3, ends in 248, which means it's a multiple of 8, and 124 + 8 x 4 = 156, which means it's a multiple of 13 The rule works because 312 = 2^3 x 3 x 13
To determine if a number is divisible by 2356, you can use the divisibility rules for its prime factors. First, factor 2356 into its prime components, which are 2, 4, 589. Check if the number is even (for 2), if it ends in 0 or 5 (for 5), and apply the rules for 589 as needed. For a number W, you would follow its specific divisibility rules, which may involve checking for factors or specific modular conditions.
Factors are divisors. If you know the divisibility rules, you know that 80 is divisible by 1, 2, 4, 5 and 8. If you divide 80 by those numbers, you find the other half of the factor pairs.
312 has sixteen factors.1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312
The composite factors of 312 are 4, 6, 8, 12, 24, 26, 39, 52, 78, 104, 156, 312
The factors of 312 are 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, and 312
You only have to test the numbers 1 through 5. If you know the rules of divisibility, you know that 3, 4 and 5 aren't factors.
The least 4 factors of 144 are 1, 2, 3, and 4 .
1, 2, 3 and 4
You have to use the rules of 4 and 9 Using the rules of 2 and 18 won't work because the smallest common multiple of 2 and 18 is 18 not 36. 3 and 12 won't work either because the smallest common multiple of 3 and 12 is 12 not 36. However 4 and 9 does work because their biggest common divisor is 1 so multiplying them works. The biggest common divisor of 2 and 18 is 2 and the biggest common divisor of 3 and 12 is 3