相亲数


相亲数(Amicable Pair),又称亲和数、友爱数、友好数,指两个正整数中,彼此的全部约数之和(本身除外)与另一方相等。毕达哥拉斯曾说:“朋友是你灵魂的倩影,要像220与284一样亲密。”
例如220与284:
换句话说,亲和数又可以说成是两个正整数中,一方的全部约数之和与另一方的全部约数之和相等。
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词汇 | Amicable numbers |
分类 | 英语词汇 英语翻译词典 |
释义 |
Amicable numbers
中文百科
相亲数![]() ![]() 相亲数(Amicable Pair),又称亲和数、友爱数、友好数,指两个正整数中,彼此的全部约数之和(本身除外)与另一方相等。毕达哥拉斯曾说:“朋友是你灵魂的倩影,要像220与284一样亲密。” 例如220与284: 换句话说,亲和数又可以说成是两个正整数中,一方的全部约数之和与另一方的全部约数之和相等。
英语百科
Amicable numbers 相亲数![]() ![]() Amicable numbers are two different numbers so related that the sum of the proper divisors of each is equal to the other number. (A proper divisor of a number is a positive factor of that number other than the number itself. For example, the proper divisors of 6 are 1, 2, and 3.) A pair of amicable numbers constitutes an aliquot sequence of period 2. A related concept is that of a perfect number, which is a number that equals the sum of its own proper divisors, in other words a number which forms an aliquot sequence of period 1. Numbers that are members of an aliquot sequence with period greater than 2 are known as sociable numbers. |
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