Lê Quốc Trần Anh Coordinator
19/03/2018 at 13:45-
Fixida 19/03/2018 at 14:11
The numbers divide 220 are: 1,2,4,5,10,11,20,22,44,55,110.When we add them up, we have 284.
The numbers divide 284 are: 1,2,4,71,142.When we add them up, we have 220.
Lê Quốc Trần Anh selected this answer. -
Fixida 19/03/2018 at 13:57
no i know more
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Fixida 19/03/2018 at 14:14
i explained
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It is correct (friendly numbers) but can you explain the rules of the numbers?
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Fixida 19/03/2018 at 13:55
i just know how it called
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Fixida 19/03/2018 at 13:52
right?
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Fixida 19/03/2018 at 13:52
amicable numbers
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Fixida 19/03/2018 at 13:50
please check for me
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Fixida 19/03/2018 at 13:50
these called friendly numbers