18697905

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3221}}^1$

素因数の和:3278

約数の個数: 32

約数和(自身を含む): 34024320

約数和(自身を除く): 15326415

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3221, 5805, 9663, 16105, 28989, 48315, 86967, 138503, 144945, 415509, 434835, 692515, 1246527, 2077545, 3739581, 6232635, 18697905]

約数ペア:

[(1, 18697905), (3, 6232635), (5, 3739581), (9, 2077545), (15, 1246527), (27, 692515), (43, 434835), (45, 415509), (129, 144945), (135, 138503), (215, 86967), (387, 48315), (645, 28989), (1161, 16105), (1935, 9663), (3221, 5805)]