Factor Investigation Worksheet Page 2
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1
2ANSWER KEY
Factor Investigation
FACTOR: a number that divides evenly into another number
PROPER FACTOR: all factors except the number itself
PERFECT NUMBER: the sum of all of its proper factors is equal to the number itself
DEFICIENT NUMBER: the sum of all of its proper factors is less than the number itself
PRIME NUMBER: only factors are one and itself
ABUNDANT NUMBER: the sum of all of its proper factors is greater than the number itself
NUMBER
FACTORS
SUM
CLASSIFICATION
1
1
1
Deficient
2
1,2
1
Prime
3
1,3
1
Prime
4
1,2,4
3
Deficient
5
1,5
1
Prime
6
1,2,3,6
6
Perfect
7
1,7
1
Prime
8
1,2,4,8
7
Deficient
9
1,3,9
4
Deficient
10
1,2,5,10
8
Deficient
11
1,11
1
Prime
1,2,3,4,6,12
16
Abundant
12
13
1,13
1
Prime
14
1,2,7,14
10
Deficient
15
1,3,5,15
8
Deficient
16
1,2,4,8,16
15
Deficient
1,17
1
Prime
17
18
1,2,3,6,9,18
21
Abundant
19
1,19
1
Prime
20
1,2,4,5,10,20
22
Abundant
21
1,3,7,21
11
Deficient
22
1,2,11,22
14
Deficient
23
1,23
1
Prime
1,2,3,4,6,8,12,24
36
Abundant
24
25
1,5,25
6
Deficient
Factor Investigation
2
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