20511480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:445

約数の個数: 128

約数和(自身を含む): 68947200

約数和(自身を除く): 48435720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 41, 44, 55, 60, 66, 82, 88, 110, 120, 123, 132, 164, 165, 205, 220, 246, 264, 328, 330, 379, 410, 440, 451, 492, 615, 660, 758, 820, 902, 984, 1137, 1230, 1320, 1353, 1516, 1640, 1804, 1895, 2255, 2274, 2460, 2706, 3032, 3608, 3790, 4169, 4510, 4548, 4920, 5412, 5685, 6765, 7580, 8338, 9020, 9096, 10824, 11370, 12507, 13530, 15160, 15539, 16676, 18040, 20845, 22740, 25014, 27060, 31078, 33352, 41690, 45480, 46617, 50028, 54120, 62156, 62535, 77695, 83380, 93234, 100056, 124312, 125070, 155390, 166760, 170929, 186468, 233085, 250140, 310780, 341858, 372936, 466170, 500280, 512787, 621560, 683716, 854645, 932340, 1025574, 1367432, 1709290, 1864680, 2051148, 2563935, 3418580, 4102296, 5127870, 6837160, 10255740, 20511480]

約数ペア:

[(1, 20511480), (2, 10255740), (3, 6837160), (4, 5127870), (5, 4102296), (6, 3418580), (8, 2563935), (10, 2051148), (11, 1864680), (12, 1709290), (15, 1367432), (20, 1025574), (22, 932340), (24, 854645), (30, 683716), (33, 621560), (40, 512787), (41, 500280), (44, 466170), (55, 372936), (60, 341858), (66, 310780), (82, 250140), (88, 233085), (110, 186468), (120, 170929), (123, 166760), (132, 155390), (164, 125070), (165, 124312), (205, 100056), (220, 93234), (246, 83380), (264, 77695), (328, 62535), (330, 62156), (379, 54120), (410, 50028), (440, 46617), (451, 45480), (492, 41690), (615, 33352), (660, 31078), (758, 27060), (820, 25014), (902, 22740), (984, 20845), (1137, 18040), (1230, 16676), (1320, 15539), (1353, 15160), (1516, 13530), (1640, 12507), (1804, 11370), (1895, 10824), (2255, 9096), (2274, 9020), (2460, 8338), (2706, 7580), (3032, 6765), (3608, 5685), (3790, 5412), (4169, 4920), (4510, 4548)]