81387180

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{7177}}^1$

素因数の和:7205

約数の個数: 120

約数和(自身を含む): 291828768

約数和(自身を除く): 210441588

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, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 7177, 11340, 14354, 21531, 28708, 35885, 43062, 50239, 64593, 71770, 86124, 100478, 107655, 129186, 143540, 150717, 193779, 200956, 215310, 251195, 258372, 301434, 322965, 387558, 430620, 452151, 502390, 581337, 602868, 645930, 753585, 775116, 904302, 968895, 1004780, 1162674, 1291860, 1356453, 1507170, 1808604, 1937790, 2260755, 2325348, 2712906, 2906685, 3014340, 3875580, 4069359, 4521510, 5425812, 5813370, 6782265, 8138718, 9043020, 11626740, 13564530, 16277436, 20346795, 27129060, 40693590, 81387180]

約数ペア:

[(1, 81387180), (2, 40693590), (3, 27129060), (4, 20346795), (5, 16277436), (6, 13564530), (7, 11626740), (9, 9043020), (10, 8138718), (12, 6782265), (14, 5813370), (15, 5425812), (18, 4521510), (20, 4069359), (21, 3875580), (27, 3014340), (28, 2906685), (30, 2712906), (35, 2325348), (36, 2260755), (42, 1937790), (45, 1808604), (54, 1507170), (60, 1356453), (63, 1291860), (70, 1162674), (81, 1004780), (84, 968895), (90, 904302), (105, 775116), (108, 753585), (126, 645930), (135, 602868), (140, 581337), (162, 502390), (180, 452151), (189, 430620), (210, 387558), (252, 322965), (270, 301434), (315, 258372), (324, 251195), (378, 215310), (405, 200956), (420, 193779), (540, 150717), (567, 143540), (630, 129186), (756, 107655), (810, 100478), (945, 86124), (1134, 71770), (1260, 64593), (1620, 50239), (1890, 43062), (2268, 35885), (2835, 28708), (3780, 21531), (5670, 14354), (7177, 11340)]