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| a number that has exactly two factors, 1 and itself. |
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all the factors of a number except that number itself.
eg., proper factors of 12 are 1, 2, 3, 4, 6. |
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a number that divides a given number leaving a zero remainder
eg, 5 is a divisor of 20 since 20 / 5 = 4 has a remainderr of 0. a divisor of a given number is also known as a factor of that number. |
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a factor that two or more numbers share
eg, 7 is a common factor of 14 and 35 because 7 is a factor of 14 (14 = 2 x 7) and a factor of 35 (35 = 5 x 7) |
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| diagram that uses circles to group things that belong together |
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| a number that has more than two factors. |
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| the product of a number and another whole number. For example, 24 is a multiple of 6 because 4 x 6 = 24. |
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| a number for which the sum of all its proper factors is greater than the number itself. For example, 24 is an abundant number because its proper factors 1, 2,, 3,,4, 6, 8 and 12 add to 36. |
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Definition
| a number for which the sum of all lits proper factors is less than the number itself. For example, 14 is a deficient number because its proper factors add to 10. all prime numbers are deficient. |
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Term
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Definition
| a number for which the sum of all lits proper factors is less than the number itself. For example, 14 is a deficient number because its proper factors add to 10. all prime numbers are deficient. |
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Definition
| a number for which the sum of all its proper factors is the number itself. For example, 6 is a perfect number because its proper factors, 1, 2 and 3 add to 6. |
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