81405495

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{17911}}^1$

素因数の和:18023

約数の個数: 24

約数和(自身を含む): 142507872

約数和(自身を除く): 61102377

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4545, 17911, 53733, 89555, 161199, 268665, 805995, 1809011, 5427033, 9045055, 16281099, 27135165, 81405495]

約数ペア:

[(1, 81405495), (3, 27135165), (5, 16281099), (9, 9045055), (15, 5427033), (45, 1809011), (101, 805995), (303, 268665), (505, 161199), (909, 89555), (1515, 53733), (4545, 17911)]