sociable number

名词 n.
中文释义

英文释义

名词 n.
  1. Any of a sequence of numbers having the property that the sum of the divisors of each, excluding itself, is equal to the next number in the sequence; in the case of the last number of the sequence, the sum of the divisors, excluding that number, is equal to the first number of the sequence.
    — The numbers in the sequence <1264460, 1547860, 1727636, 1305184> are sociable numbers.

词形变化

sociable numbers plural
0 次浏览 数据来源: Wiktionary