450有18个因数:450=2x3x3x5x5(1+1)*(1+2)*(1+2)=18所有的因数之和是1209所有因数是:1,2,3,5,6,9,10,15,18,25,30,45,50,75,90,150,225,450所有的因数之和=1,2,3,5,6,9,10,15,18,25,30,45,50,75,90,150,225,450之和=1209
👌有18个因数,和为1209。