21000815445

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82356139}}^1$

素因数の和:82356164

約数の個数: 16

約数和(自身を含む): 35577852480

約数和(自身を除く): 14577037035

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82356139, 247068417, 411780695, 1235342085, 1400054363, 4200163089, 7000271815, 21000815445]

約数ペア:

[(1, 21000815445), (3, 7000271815), (5, 4200163089), (15, 1400054363), (17, 1235342085), (51, 411780695), (85, 247068417), (255, 82356139)]