Math
2006-12-16 08:33:31 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
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2006-12-16 08:37:09 · answer #1 · answered by lori b 2 · 0⤊ 2⤋
The proper factors of a number are all the factors of a number except the number itself
The proper factors of 20 are 1, 2, 4, 5, 10
The sum of these numbers is:
1+2+4+5+10=22
Therefore your answer is 22
2006-12-16 16:37:56 · answer #2 · answered by Michael Murphy 2 · 1⤊ 0⤋
proper factors are all factors of a number besides 1 and itself.
All factors of 20 are 1, 2 , 4 , 5, 10, and 20.
The proper factors are 2 ,4 ,5, and 10.
Add them and get 21.
Hope I helped.
2006-12-16 16:37:28 · answer #3 · answered by teekshi33 4 · 0⤊ 0⤋
1 + 2 + 4 + 5 + 10 + 20 = 42
If you arent including 20, it is:
1 + 2 + 4 + 5 + 10 = 22
2006-12-16 16:37:48 · answer #4 · answered by novadeath69 2 · 0⤊ 0⤋
the factors are: 1, 2, 5
2006-12-16 16:44:40 · answer #5 · answered by Renaud 3 · 0⤊ 1⤋
I would say 2,2 and 5:
20/2=10 ; 10/2=5, 2+2+5=9
2006-12-16 16:43:40 · answer #6 · answered by Anonymous · 0⤊ 1⤋