81905120

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:468

約数の個数: 96

約数和(自身を含む): 213101280

約数和(自身を除く): 131196160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 173, 176, 220, 269, 346, 352, 440, 538, 692, 865, 880, 1076, 1345, 1384, 1730, 1760, 1903, 2152, 2690, 2768, 2959, 3460, 3806, 4304, 5380, 5536, 5918, 6920, 7612, 8608, 9515, 10760, 11836, 13840, 14795, 15224, 19030, 21520, 23672, 27680, 29590, 30448, 38060, 43040, 46537, 47344, 59180, 60896, 76120, 93074, 94688, 118360, 152240, 186148, 232685, 236720, 304480, 372296, 465370, 473440, 511907, 744592, 930740, 1023814, 1489184, 1861480, 2047628, 2559535, 3722960, 4095256, 5119070, 7445920, 8190512, 10238140, 16381024, 20476280, 40952560, 81905120]

約数ペア:

[(1, 81905120), (2, 40952560), (4, 20476280), (5, 16381024), (8, 10238140), (10, 8190512), (11, 7445920), (16, 5119070), (20, 4095256), (22, 3722960), (32, 2559535), (40, 2047628), (44, 1861480), (55, 1489184), (80, 1023814), (88, 930740), (110, 744592), (160, 511907), (173, 473440), (176, 465370), (220, 372296), (269, 304480), (346, 236720), (352, 232685), (440, 186148), (538, 152240), (692, 118360), (865, 94688), (880, 93074), (1076, 76120), (1345, 60896), (1384, 59180), (1730, 47344), (1760, 46537), (1903, 43040), (2152, 38060), (2690, 30448), (2768, 29590), (2959, 27680), (3460, 23672), (3806, 21520), (4304, 19030), (5380, 15224), (5536, 14795), (5918, 13840), (6920, 11836), (7612, 10760), (8608, 9515)]