18976760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:141

約数の個数: 128

約数和(自身を含む): 51321600

約数和(自身を除く): 32344840

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 43, 44, 55, 59, 68, 85, 86, 88, 110, 118, 136, 170, 172, 187, 215, 220, 236, 295, 340, 344, 374, 430, 440, 472, 473, 590, 649, 680, 731, 748, 860, 935, 946, 1003, 1180, 1298, 1462, 1496, 1720, 1870, 1892, 2006, 2360, 2365, 2537, 2596, 2924, 3245, 3655, 3740, 3784, 4012, 4730, 5015, 5074, 5192, 5848, 6490, 7310, 7480, 8024, 8041, 9460, 10030, 10148, 11033, 12685, 12980, 14620, 16082, 18920, 20060, 20296, 22066, 25370, 25960, 27907, 29240, 32164, 40120, 40205, 43129, 44132, 50740, 55165, 55814, 64328, 80410, 86258, 88264, 101480, 110330, 111628, 139535, 160820, 172516, 215645, 220660, 223256, 279070, 321640, 345032, 431290, 441320, 474419, 558140, 862580, 948838, 1116280, 1725160, 1897676, 2372095, 3795352, 4744190, 9488380, 18976760]

約数ペア:

[(1, 18976760), (2, 9488380), (4, 4744190), (5, 3795352), (8, 2372095), (10, 1897676), (11, 1725160), (17, 1116280), (20, 948838), (22, 862580), (34, 558140), (40, 474419), (43, 441320), (44, 431290), (55, 345032), (59, 321640), (68, 279070), (85, 223256), (86, 220660), (88, 215645), (110, 172516), (118, 160820), (136, 139535), (170, 111628), (172, 110330), (187, 101480), (215, 88264), (220, 86258), (236, 80410), (295, 64328), (340, 55814), (344, 55165), (374, 50740), (430, 44132), (440, 43129), (472, 40205), (473, 40120), (590, 32164), (649, 29240), (680, 27907), (731, 25960), (748, 25370), (860, 22066), (935, 20296), (946, 20060), (1003, 18920), (1180, 16082), (1298, 14620), (1462, 12980), (1496, 12685), (1720, 11033), (1870, 10148), (1892, 10030), (2006, 9460), (2360, 8041), (2365, 8024), (2537, 7480), (2596, 7310), (2924, 6490), (3245, 5848), (3655, 5192), (3740, 5074), (3784, 5015), (4012, 4730)]