81328920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:489

約数の個数: 128

約数和(自身を含む): 258508800

約数和(自身を除く): 177179880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 79, 92, 115, 120, 138, 158, 184, 230, 237, 276, 316, 345, 373, 395, 460, 474, 552, 632, 690, 746, 790, 920, 948, 1119, 1185, 1380, 1492, 1580, 1817, 1865, 1896, 2238, 2370, 2760, 2984, 3160, 3634, 3730, 4476, 4740, 5451, 5595, 7268, 7460, 8579, 8952, 9085, 9480, 10902, 11190, 14536, 14920, 17158, 18170, 21804, 22380, 25737, 27255, 29467, 34316, 36340, 42895, 43608, 44760, 51474, 54510, 58934, 68632, 72680, 85790, 88401, 102948, 109020, 117868, 128685, 147335, 171580, 176802, 205896, 218040, 235736, 257370, 294670, 343160, 353604, 442005, 514740, 589340, 677741, 707208, 884010, 1029480, 1178680, 1355482, 1768020, 2033223, 2710964, 3388705, 3536040, 4066446, 5421928, 6777410, 8132892, 10166115, 13554820, 16265784, 20332230, 27109640, 40664460, 81328920]

約数ペア:

[(1, 81328920), (2, 40664460), (3, 27109640), (4, 20332230), (5, 16265784), (6, 13554820), (8, 10166115), (10, 8132892), (12, 6777410), (15, 5421928), (20, 4066446), (23, 3536040), (24, 3388705), (30, 2710964), (40, 2033223), (46, 1768020), (60, 1355482), (69, 1178680), (79, 1029480), (92, 884010), (115, 707208), (120, 677741), (138, 589340), (158, 514740), (184, 442005), (230, 353604), (237, 343160), (276, 294670), (316, 257370), (345, 235736), (373, 218040), (395, 205896), (460, 176802), (474, 171580), (552, 147335), (632, 128685), (690, 117868), (746, 109020), (790, 102948), (920, 88401), (948, 85790), (1119, 72680), (1185, 68632), (1380, 58934), (1492, 54510), (1580, 51474), (1817, 44760), (1865, 43608), (1896, 42895), (2238, 36340), (2370, 34316), (2760, 29467), (2984, 27255), (3160, 25737), (3634, 22380), (3730, 21804), (4476, 18170), (4740, 17158), (5451, 14920), (5595, 14536), (7268, 11190), (7460, 10902), (8579, 9480), (8952, 9085)]