首页
登录
职称英语
If n = pqr, where p, q, and r are three different positive prime numbers, how ma
If n = pqr, where p, q, and r are three different positive prime numbers, how ma
游客
2025-02-24
31
管理
问题
If n = pqr, where p, q, and r are three different positive prime numbers, how many different positive divisors does n have, including 1 and n?
选项
A、3
B、5
C、6
D、7
E、8
答案
E
解析
若n=pqr,其中p,q,r是3个不同的正质数(positive prime numbers),n有多少个不同的因子,包括1和n?
解:本题的正确答案为(E)。由因子数求解公式可得n=p×q×r,当p,q,r为质数时n的因子数为(1+1)(1+1)(1+1)=8个。
转载请注明原文地址:https://tihaiku.com/zcyy/3971416.html
相关试题推荐
Ifn=pqr,wherep,q,andrarethreedifferentpositiveprimenumbers,howma
Thesumofndifferentpositiveintegersislessthan100.Whatisthegreatest
Forallrealnumberspandr,p◇r=pr-p+r.ColumnAColumnB
[img]ct_2image002[/img]Thesumofeachpairofnumbersindiametricallyopposit
Ofthepositiveintegersthataremultiplesof30andarelessthanorequalto
[img]ct_2image018[/img]n,r,s,andtarepositiveintegers.ColumnA
Ifyistheaverage(arithmeticmean)ofnconsecutivepositiveintegers,n>l,w
Thenumbers3,10,17,24,31,and38arethefirstsixtermsofaninfiniteseq
Ifpandrareprimenumbers,whichofthefollowingmustalsobeprime?A、prB、p
Apositiveintegerwithexactlytwodifferentdivisorsgreaterthan1mustbeA、a
随机试题
NewYear’sresolutionsarethosespeciallittlepromisesyou(1)_____tobel
Hardshipdidnotendwithfreedom.Therewere(1)______regionalvariationin
[originaltext]Scientistssaysharkshavelivedintheworld’soceansformi
Forthispart,youareallowed30minutestowriteanessay.Youshouldstartwi
硫酸钠溶液浸泡法一般是用来测定石子的()。A.强度 B.硬度 C.坚固性
下列关于内分泌的叙述,正确的是( )。A.排卵前LH和FSH分泌达高峰 B.
醋和盐炮制中药,能引药入A.肝经、脾经 B.肝经、肾经 C.心经、胃经 D
根据下列资料回答问题。 2010年,我国进出口贸易总额为29727.6亿美元
企业转销无法支付的应付账款时,应将该应付账款账面余额计入()。 A.资本公积
内服通利二便,外用杀虫敛疮的药物是A.铅丹 B.轻粉 C.土荆皮 D.白矾
最新回复
(
0
)