21288111

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{8147}}^1$

素因数の和:8230

約数の個数: 16

約数和(自身を含む): 31027584

約数和(自身を除く): 9739473

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 8147, 24441, 105911, 317733, 545849, 1637547, 7096037, 21288111]

約数ペア:

[(1, 21288111), (3, 7096037), (13, 1637547), (39, 545849), (67, 317733), (201, 105911), (871, 24441), (2613, 8147)]