20486760

素因数分解:

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

素因数の和:108

約数の個数: 128

約数和(自身を含む): 72748800

約数和(自身を除く): 52262040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 56, 58, 60, 70, 84, 87, 105, 116, 120, 140, 145, 168, 174, 203, 210, 232, 280, 290, 348, 406, 420, 435, 580, 609, 696, 812, 840, 841, 870, 1015, 1160, 1218, 1624, 1682, 1740, 2030, 2436, 2523, 3045, 3364, 3480, 4060, 4205, 4872, 5046, 5887, 6090, 6728, 8120, 8410, 10092, 11774, 12180, 12615, 16820, 17661, 20184, 23548, 24360, 24389, 25230, 29435, 33640, 35322, 47096, 48778, 50460, 58870, 70644, 73167, 88305, 97556, 100920, 117740, 121945, 141288, 146334, 170723, 176610, 195112, 235480, 243890, 292668, 341446, 353220, 365835, 487780, 512169, 585336, 682892, 706440, 731670, 853615, 975560, 1024338, 1365784, 1463340, 1707230, 2048676, 2560845, 2926680, 3414460, 4097352, 5121690, 6828920, 10243380, 20486760]

約数ペア:

[(1, 20486760), (2, 10243380), (3, 6828920), (4, 5121690), (5, 4097352), (6, 3414460), (7, 2926680), (8, 2560845), (10, 2048676), (12, 1707230), (14, 1463340), (15, 1365784), (20, 1024338), (21, 975560), (24, 853615), (28, 731670), (29, 706440), (30, 682892), (35, 585336), (40, 512169), (42, 487780), (56, 365835), (58, 353220), (60, 341446), (70, 292668), (84, 243890), (87, 235480), (105, 195112), (116, 176610), (120, 170723), (140, 146334), (145, 141288), (168, 121945), (174, 117740), (203, 100920), (210, 97556), (232, 88305), (280, 73167), (290, 70644), (348, 58870), (406, 50460), (420, 48778), (435, 47096), (580, 35322), (609, 33640), (696, 29435), (812, 25230), (840, 24389), (841, 24360), (870, 23548), (1015, 20184), (1160, 17661), (1218, 16820), (1624, 12615), (1682, 12180), (1740, 11774), (2030, 10092), (2436, 8410), (2523, 8120), (3045, 6728), (3364, 6090), (3480, 5887), (4060, 5046), (4205, 4872)]