20403687

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{3911}}^1$

素因数の和:3998

約数の個数: 16

約数和(自身を含む): 28541952

約数和(自身を除く): 8138265

約数列:

[1, 3, 37, 47, 111, 141, 1739, 3911, 5217, 11733, 144707, 183817, 434121, 551451, 6801229, 20403687]

約数ペア:

[(1, 20403687), (3, 6801229), (37, 551451), (47, 434121), (111, 183817), (141, 144707), (1739, 11733), (3911, 5217)]