81129519

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{23293}}^1$

素因数の和:23348

約数の個数: 20

約数和(自身を含む): 124017256

約数和(自身を除く): 42887737

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 23293, 69879, 209637, 628911, 1001599, 1886733, 3004797, 9014391, 27043173, 81129519]

約数ペア:

[(1, 81129519), (3, 27043173), (9, 9014391), (27, 3004797), (43, 1886733), (81, 1001599), (129, 628911), (387, 209637), (1161, 69879), (3483, 23293)]