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一、我们身边的事物及科学以10为单位的计数法计算很方便.但是古代法国的高卢人、中美洲的玛雅人,还有其它一些民族用的却是20进位制.苏美尔人、巴比伦人及后的一些民族则用的是60进位制.因为60可以被2、3、4、5、6、10、12、15、20、30整除,计算也是方便的.60进位制保留下来的有1小时60分钟.1分钟60秒,一个圆周分为360度等.古希腊人认为6是第一个“完全数”,因为它是其本身之外所有约数之和,即6可被1或2或3整除,而1+2+3=6.从古希腊人得出此一结论至1952年首次用计算机来寻找完全数的2000余年间,数学家们仅发现另外11个完全数.现在我们知道有24个.(最大的一个是12003位.)拿来
First, the things around us and the science of counting by 10 units is very convenient, but the ancient French Gauls, the Mayan people in Central America, and other ethnic groups are using the 20-bit system.Sumer , Babylonians and some of the nation after the use of the 60-bit system because 60 can be divisible by 2,3,4,5,6,10,12,15,20,30, calculation is also convenient. 1 hour and 60 minutes down, 1 minute and 60 seconds, a circle divided into 360 degrees, etc. The ancient Greeks considered 6 as the first “perfect number” because it is the sum of all the divisors outside of itself Can be divisible by 1 or 2 or 3, and 1 + 2 + 3 = 6. From the ancient Greeks came to this conclusion to 1952 the first time using computers to find the perfect number of 2000 years, mathematicians only found that another 11 Now we know that there are 24 (the largest one is 12003)