sociable numbers造句

例句与造句

1. There are no known sets of three sociable numbers, apparently.
2. Similarly, none of the amicable numbers or sociable numbers are untouchable.
3. There are no known sociable numbers of order 3.
4. A pair of amicable numbers is a set of sociable numbers of order 2.
5. :Yes, clearly 10 is not an amicable number or even a sociable number.
6. It's difficult to find sociable numbers in a sentence. 用sociable numbers造句挺难的
7. Numbers that are members of an aliquot sequence with period greater than 2 are known as sociable numbers.
8. A " chain " ( his word, not mine ) is in our article a set of sociable numbers.
9. 25 is the smallest aspiring number & mdash; a composite non-sociable number whose aliquot sequence does not terminate.
10. But the period can be longer than two, involving what I will call, to keep the same terminology, sociable numbers.
11. For example, 1264460 \ mapsto 1547860 \ mapsto 1727636 \ mapsto 1305184 \ mapsto 1264460 \ mapsto \ dots are sociable numbers of order 4.
12. Sociable numbers are the numbers in cyclic lists of numbers ( with a length greater than 2 ) where each number is the sum of the proper divisors of the preceding number.
13. In spite of the similarity in name, there is no specific relationship between the friendly numbers and the amicable numbers or the sociable numbers, although the definitions of the latter two also involve the divisor function.
14. If the period of the sequence is 1, the number is a sociable number of order 1, or a perfect number for example, the proper divisors of 6 are 1, 2, and 3, whose sum is again 6.
15. It is an open question whether all numbers end up at either a sociable number or at a prime ( and hence 1 ), or, equivalently, whether there exist numbers whose aliquot sequence never terminates, and hence grows without bound.