20913480

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:260

約数の個数: 192

約数和(自身を含む): 79896960

約数和(自身を除く): 58983480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 43, 45, 56, 60, 63, 70, 72, 84, 86, 90, 105, 120, 126, 129, 140, 168, 172, 180, 193, 210, 215, 252, 258, 280, 301, 315, 344, 360, 386, 387, 420, 430, 504, 516, 579, 602, 630, 645, 772, 774, 840, 860, 903, 965, 1032, 1158, 1204, 1260, 1290, 1351, 1505, 1544, 1548, 1720, 1737, 1806, 1930, 1935, 2316, 2408, 2520, 2580, 2702, 2709, 2895, 3010, 3096, 3474, 3612, 3860, 3870, 4053, 4515, 4632, 5160, 5404, 5418, 5790, 6020, 6755, 6948, 7224, 7720, 7740, 8106, 8299, 8685, 9030, 10808, 10836, 11580, 12040, 12159, 13510, 13545, 13896, 15480, 16212, 16598, 17370, 18060, 20265, 21672, 23160, 24318, 24897, 27020, 27090, 32424, 33196, 34740, 36120, 40530, 41495, 48636, 49794, 54040, 54180, 58093, 60795, 66392, 69480, 74691, 81060, 82990, 97272, 99588, 108360, 116186, 121590, 124485, 149382, 162120, 165980, 174279, 199176, 232372, 243180, 248970, 290465, 298764, 331960, 348558, 373455, 464744, 486360, 497940, 522837, 580930, 597528, 697116, 746910, 871395, 995880, 1045674, 1161860, 1394232, 1493820, 1742790, 2091348, 2323720, 2614185, 2987640, 3485580, 4182696, 5228370, 6971160, 10456740, 20913480]

約数ペア:

[(1, 20913480), (2, 10456740), (3, 6971160), (4, 5228370), (5, 4182696), (6, 3485580), (7, 2987640), (8, 2614185), (9, 2323720), (10, 2091348), (12, 1742790), (14, 1493820), (15, 1394232), (18, 1161860), (20, 1045674), (21, 995880), (24, 871395), (28, 746910), (30, 697116), (35, 597528), (36, 580930), (40, 522837), (42, 497940), (43, 486360), (45, 464744), (56, 373455), (60, 348558), (63, 331960), (70, 298764), (72, 290465), (84, 248970), (86, 243180), (90, 232372), (105, 199176), (120, 174279), (126, 165980), (129, 162120), (140, 149382), (168, 124485), (172, 121590), (180, 116186), (193, 108360), (210, 99588), (215, 97272), (252, 82990), (258, 81060), (280, 74691), (301, 69480), (315, 66392), (344, 60795), (360, 58093), (386, 54180), (387, 54040), (420, 49794), (430, 48636), (504, 41495), (516, 40530), (579, 36120), (602, 34740), (630, 33196), (645, 32424), (772, 27090), (774, 27020), (840, 24897), (860, 24318), (903, 23160), (965, 21672), (1032, 20265), (1158, 18060), (1204, 17370), (1260, 16598), (1290, 16212), (1351, 15480), (1505, 13896), (1544, 13545), (1548, 13510), (1720, 12159), (1737, 12040), (1806, 11580), (1930, 10836), (1935, 10808), (2316, 9030), (2408, 8685), (2520, 8299), (2580, 8106), (2702, 7740), (2709, 7720), (2895, 7224), (3010, 6948), (3096, 6755), (3474, 6020), (3612, 5790), (3860, 5418), (3870, 5404), (4053, 5160), (4515, 4632)]