81408316

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 167311872

約数和(自身を除く): 85903556

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 71, 92, 103, 121, 142, 206, 242, 253, 284, 412, 484, 506, 781, 1012, 1133, 1562, 1633, 2266, 2369, 2783, 3124, 3266, 4532, 4738, 5566, 6532, 7313, 8591, 9476, 11132, 12463, 14626, 17182, 17963, 24926, 26059, 29252, 34364, 35926, 49852, 52118, 71852, 80443, 104236, 160886, 168199, 197593, 286649, 321772, 336398, 395186, 573298, 672796, 790372, 884873, 1146596, 1769746, 1850189, 3539492, 3700378, 7400756, 20352079, 40704158, 81408316]

約数ペア:

[(1, 81408316), (2, 40704158), (4, 20352079), (11, 7400756), (22, 3700378), (23, 3539492), (44, 1850189), (46, 1769746), (71, 1146596), (92, 884873), (103, 790372), (121, 672796), (142, 573298), (206, 395186), (242, 336398), (253, 321772), (284, 286649), (412, 197593), (484, 168199), (506, 160886), (781, 104236), (1012, 80443), (1133, 71852), (1562, 52118), (1633, 49852), (2266, 35926), (2369, 34364), (2783, 29252), (3124, 26059), (3266, 24926), (4532, 17963), (4738, 17182), (5566, 14626), (6532, 12463), (7313, 11132), (8591, 9476)]