21790020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1789}}^1$

素因数の和:1837

約数の個数: 96

約数和(自身を含む): 72172800

約数和(自身を除く): 50382780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 116, 140, 145, 174, 203, 210, 290, 348, 406, 420, 435, 580, 609, 812, 870, 1015, 1218, 1740, 1789, 2030, 2436, 3045, 3578, 4060, 5367, 6090, 7156, 8945, 10734, 12180, 12523, 17890, 21468, 25046, 26835, 35780, 37569, 50092, 51881, 53670, 62615, 75138, 103762, 107340, 125230, 150276, 155643, 187845, 207524, 250460, 259405, 311286, 363167, 375690, 518810, 622572, 726334, 751380, 778215, 1037620, 1089501, 1452668, 1556430, 1815835, 2179002, 3112860, 3631670, 4358004, 5447505, 7263340, 10895010, 21790020]

約数ペア:

[(1, 21790020), (2, 10895010), (3, 7263340), (4, 5447505), (5, 4358004), (6, 3631670), (7, 3112860), (10, 2179002), (12, 1815835), (14, 1556430), (15, 1452668), (20, 1089501), (21, 1037620), (28, 778215), (29, 751380), (30, 726334), (35, 622572), (42, 518810), (58, 375690), (60, 363167), (70, 311286), (84, 259405), (87, 250460), (105, 207524), (116, 187845), (140, 155643), (145, 150276), (174, 125230), (203, 107340), (210, 103762), (290, 75138), (348, 62615), (406, 53670), (420, 51881), (435, 50092), (580, 37569), (609, 35780), (812, 26835), (870, 25046), (1015, 21468), (1218, 17890), (1740, 12523), (1789, 12180), (2030, 10734), (2436, 8945), (3045, 7156), (3578, 6090), (4060, 5367)]