Sociable Numbers computed using the analog of the Restricted Divisor Function in which only Unitary Divisors are included.

**References**

Guy, R. K. ``Unitary Aliquot Sequences.'' §B8 in
*Unsolved Problems in Number Theory, 2nd ed.* New York: Springer-Verlag, pp. 63-65, 1994.

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1999-05-26