The Aliquot sequence for an integer is generated by finding all the proper factors (i.e. exclude the number itself) and summing them to get the next number in the sequence.[br][br]E.g. 10 has factors: 1, 2, and 5, so the next number is 1+2+5=8[br]8 has factors 1, 2, 4 -> 7[br]7 is prime, and only has factor 1. The sequence will end here.