15993991

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 19368720

約数和(自身を除く): 3374729

約数列:

[1, 13, 17, 19, 169, 221, 247, 293, 323, 2873, 3211, 3809, 4199, 4981, 5567, 49517, 54587, 64753, 72371, 94639, 841789, 940823, 1230307, 15993991]

約数ペア:

[(1, 15993991), (13, 1230307), (17, 940823), (19, 841789), (169, 94639), (221, 72371), (247, 64753), (293, 54587), (323, 49517), (2873, 5567), (3211, 4981), (3809, 4199)]