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A135652
Divisors of 28 (the 2nd perfect number), written in base 2.
+0
11
1, 10, 100, 111, 1110, 11100
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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