21248880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 49460880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 40, 43, 48, 58, 60, 71, 80, 86, 87, 116, 120, 129, 142, 145, 172, 174, 213, 215, 232, 240, 258, 284, 290, 344, 348, 355, 426, 430, 435, 464, 516, 568, 580, 645, 688, 696, 710, 852, 860, 870, 1032, 1065, 1136, 1160, 1247, 1290, 1392, 1420, 1704, 1720, 1740, 2059, 2064, 2130, 2320, 2494, 2580, 2840, 3053, 3408, 3440, 3480, 3741, 4118, 4260, 4988, 5160, 5680, 6106, 6177, 6235, 6960, 7482, 8236, 8520, 9159, 9976, 10295, 10320, 12212, 12354, 12470, 14964, 15265, 16472, 17040, 18318, 18705, 19952, 20590, 24424, 24708, 24940, 29928, 30530, 30885, 32944, 36636, 37410, 41180, 45795, 48848, 49416, 49880, 59856, 61060, 61770, 73272, 74820, 82360, 88537, 91590, 98832, 99760, 122120, 123540, 146544, 149640, 164720, 177074, 183180, 244240, 247080, 265611, 299280, 354148, 366360, 442685, 494160, 531222, 708296, 732720, 885370, 1062444, 1328055, 1416592, 1770740, 2124888, 2656110, 3541480, 4249776, 5312220, 7082960, 10624440, 21248880]

約数ペア:

[(1, 21248880), (2, 10624440), (3, 7082960), (4, 5312220), (5, 4249776), (6, 3541480), (8, 2656110), (10, 2124888), (12, 1770740), (15, 1416592), (16, 1328055), (20, 1062444), (24, 885370), (29, 732720), (30, 708296), (40, 531222), (43, 494160), (48, 442685), (58, 366360), (60, 354148), (71, 299280), (80, 265611), (86, 247080), (87, 244240), (116, 183180), (120, 177074), (129, 164720), (142, 149640), (145, 146544), (172, 123540), (174, 122120), (213, 99760), (215, 98832), (232, 91590), (240, 88537), (258, 82360), (284, 74820), (290, 73272), (344, 61770), (348, 61060), (355, 59856), (426, 49880), (430, 49416), (435, 48848), (464, 45795), (516, 41180), (568, 37410), (580, 36636), (645, 32944), (688, 30885), (696, 30530), (710, 29928), (852, 24940), (860, 24708), (870, 24424), (1032, 20590), (1065, 19952), (1136, 18705), (1160, 18318), (1247, 17040), (1290, 16472), (1392, 15265), (1420, 14964), (1704, 12470), (1720, 12354), (1740, 12212), (2059, 10320), (2064, 10295), (2130, 9976), (2320, 9159), (2494, 8520), (2580, 8236), (2840, 7482), (3053, 6960), (3408, 6235), (3440, 6177), (3480, 6106), (3741, 5680), (4118, 5160), (4260, 4988)]