2004=2×2×3×167
因数一共有:(2+1)×(1+1)×(1+1)=12个
分别是:1,2,3,4,6,12,167,334,501,668,1002,2004
1+2+3+4+6+12+167+334+501+668+1002+2004
=28+501+501+1670+2004
=4704