81315405

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{38447}}^1$

素因数の和:38505

約数の個数: 24

約数和(自身を含む): 143949312

約数和(自身を除く): 62633907

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 38447, 115341, 192235, 346023, 576705, 1730115, 1807009, 5421027, 9035045, 16263081, 27105135, 81315405]

約数ペア:

[(1, 81315405), (3, 27105135), (5, 16263081), (9, 9035045), (15, 5421027), (45, 1807009), (47, 1730115), (141, 576705), (235, 346023), (423, 192235), (705, 115341), (2115, 38447)]