81165915

素因数分解:

$3^3\times 5^1\times {\mathrm{727}}^1\times {\mathrm{827}}^1$

素因数の和:1568

約数の個数: 32

約数和(自身を含む): 144668160

約数和(自身を除く): 63502245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 727, 827, 2181, 2481, 3635, 4135, 6543, 7443, 10905, 12405, 19629, 22329, 32715, 37215, 98145, 111645, 601229, 1803687, 3006145, 5411061, 9018435, 16233183, 27055305, 81165915]

約数ペア:

[(1, 81165915), (3, 27055305), (5, 16233183), (9, 9018435), (15, 5411061), (27, 3006145), (45, 1803687), (135, 601229), (727, 111645), (827, 98145), (2181, 37215), (2481, 32715), (3635, 22329), (4135, 19629), (6543, 12405), (7443, 10905)]