81271485

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{20759}}^1$

素因数の和:20802

約数の個数: 32

約数和(自身を含む): 149472000

約数和(自身を除く): 68200515

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 20759, 62277, 103795, 186831, 311385, 560493, 602011, 934155, 1806033, 2802465, 3010055, 5418099, 9030165, 16254297, 27090495, 81271485]

約数ペア:

[(1, 81271485), (3, 27090495), (5, 16254297), (9, 9030165), (15, 5418099), (27, 3010055), (29, 2802465), (45, 1806033), (87, 934155), (135, 602011), (145, 560493), (261, 311385), (435, 186831), (783, 103795), (1305, 62277), (3915, 20759)]