20907180

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5531}}^1$

素因数の和:5556

約数の個数: 96

約数和(自身を含む): 74350080

約数和(自身を除く): 53442900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5531, 11062, 16593, 22124, 27655, 33186, 38717, 49779, 55310, 66372, 77434, 82965, 99558, 110620, 116151, 149337, 154868, 165930, 193585, 199116, 232302, 248895, 298674, 331860, 348453, 387170, 464604, 497790, 580755, 597348, 696906, 746685, 774340, 995580, 1045359, 1161510, 1393812, 1493370, 1742265, 2090718, 2323020, 2986740, 3484530, 4181436, 5226795, 6969060, 10453590, 20907180]

約数ペア:

[(1, 20907180), (2, 10453590), (3, 6969060), (4, 5226795), (5, 4181436), (6, 3484530), (7, 2986740), (9, 2323020), (10, 2090718), (12, 1742265), (14, 1493370), (15, 1393812), (18, 1161510), (20, 1045359), (21, 995580), (27, 774340), (28, 746685), (30, 696906), (35, 597348), (36, 580755), (42, 497790), (45, 464604), (54, 387170), (60, 348453), (63, 331860), (70, 298674), (84, 248895), (90, 232302), (105, 199116), (108, 193585), (126, 165930), (135, 154868), (140, 149337), (180, 116151), (189, 110620), (210, 99558), (252, 82965), (270, 77434), (315, 66372), (378, 55310), (420, 49779), (540, 38717), (630, 33186), (756, 27655), (945, 22124), (1260, 16593), (1890, 11062), (3780, 5531)]