81478980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:112

約数の個数: 288

約数和(自身を含む): 294940800

約数和(自身を除く): 213461820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 29, 30, 33, 36, 43, 44, 45, 54, 55, 58, 60, 66, 86, 87, 90, 99, 108, 110, 116, 121, 129, 132, 135, 145, 165, 172, 174, 180, 198, 215, 220, 242, 258, 261, 270, 290, 297, 319, 330, 348, 363, 387, 396, 430, 435, 473, 484, 495, 516, 522, 540, 580, 594, 605, 638, 645, 660, 726, 774, 783, 860, 870, 946, 957, 990, 1044, 1089, 1161, 1188, 1210, 1247, 1276, 1290, 1305, 1419, 1452, 1485, 1548, 1566, 1595, 1740, 1815, 1892, 1914, 1935, 1980, 2178, 2322, 2365, 2420, 2494, 2580, 2610, 2838, 2871, 2970, 3132, 3190, 3267, 3509, 3630, 3741, 3828, 3870, 3915, 4257, 4356, 4644, 4730, 4785, 4988, 5203, 5220, 5445, 5676, 5742, 5805, 5940, 6235, 6380, 6534, 7018, 7095, 7260, 7482, 7740, 7830, 8514, 8613, 9460, 9570, 10406, 10527, 10890, 11223, 11484, 11610, 12470, 12771, 13068, 13717, 14036, 14190, 14355, 14964, 15609, 15660, 16335, 17028, 17226, 17545, 18705, 19140, 20812, 21054, 21285, 21780, 22446, 23220, 24940, 25542, 26015, 27434, 28380, 28710, 31218, 31581, 32670, 33669, 34452, 35090, 37410, 41151, 42108, 42570, 43065, 44892, 46827, 51084, 52030, 52635, 54868, 56115, 57420, 62436, 63162, 63855, 65340, 67338, 68585, 70180, 74820, 78045, 82302, 85140, 86130, 93654, 94743, 104060, 105270, 112230, 123453, 126324, 127710, 134676, 137170, 140481, 150887, 156090, 157905, 164604, 168345, 172260, 187308, 189486, 205755, 210540, 224460, 234135, 246906, 255420, 274340, 280962, 301774, 312180, 315810, 336690, 370359, 378972, 411510, 452661, 468270, 473715, 493812, 561924, 603548, 617265, 631620, 673380, 702405, 740718, 754435, 823020, 905322, 936540, 947430, 1234530, 1357983, 1404810, 1481436, 1508870, 1810644, 1851795, 1894860, 2263305, 2469060, 2715966, 2809620, 3017740, 3703590, 4073949, 4526610, 5431932, 6789915, 7407180, 8147898, 9053220, 13579830, 16295796, 20369745, 27159660, 40739490, 81478980]

約数ペア:

[(1, 81478980), (2, 40739490), (3, 27159660), (4, 20369745), (5, 16295796), (6, 13579830), (9, 9053220), (10, 8147898), (11, 7407180), (12, 6789915), (15, 5431932), (18, 4526610), (20, 4073949), (22, 3703590), (27, 3017740), (29, 2809620), (30, 2715966), (33, 2469060), (36, 2263305), (43, 1894860), (44, 1851795), (45, 1810644), (54, 1508870), (55, 1481436), (58, 1404810), (60, 1357983), (66, 1234530), (86, 947430), (87, 936540), (90, 905322), (99, 823020), (108, 754435), (110, 740718), (116, 702405), (121, 673380), (129, 631620), (132, 617265), (135, 603548), (145, 561924), (165, 493812), (172, 473715), (174, 468270), (180, 452661), (198, 411510), (215, 378972), (220, 370359), (242, 336690), (258, 315810), (261, 312180), (270, 301774), (290, 280962), (297, 274340), (319, 255420), (330, 246906), (348, 234135), (363, 224460), (387, 210540), (396, 205755), (430, 189486), (435, 187308), (473, 172260), (484, 168345), (495, 164604), (516, 157905), (522, 156090), (540, 150887), (580, 140481), (594, 137170), (605, 134676), (638, 127710), (645, 126324), (660, 123453), (726, 112230), (774, 105270), (783, 104060), (860, 94743), (870, 93654), (946, 86130), (957, 85140), (990, 82302), (1044, 78045), (1089, 74820), (1161, 70180), (1188, 68585), (1210, 67338), (1247, 65340), (1276, 63855), (1290, 63162), (1305, 62436), (1419, 57420), (1452, 56115), (1485, 54868), (1548, 52635), (1566, 52030), (1595, 51084), (1740, 46827), (1815, 44892), (1892, 43065), (1914, 42570), (1935, 42108), (1980, 41151), (2178, 37410), (2322, 35090), (2365, 34452), (2420, 33669), (2494, 32670), (2580, 31581), (2610, 31218), (2838, 28710), (2871, 28380), (2970, 27434), (3132, 26015), (3190, 25542), (3267, 24940), (3509, 23220), (3630, 22446), (3741, 21780), (3828, 21285), (3870, 21054), (3915, 20812), (4257, 19140), (4356, 18705), (4644, 17545), (4730, 17226), (4785, 17028), (4988, 16335), (5203, 15660), (5220, 15609), (5445, 14964), (5676, 14355), (5742, 14190), (5805, 14036), (5940, 13717), (6235, 13068), (6380, 12771), (6534, 12470), (7018, 11610), (7095, 11484), (7260, 11223), (7482, 10890), (7740, 10527), (7830, 10406), (8514, 9570), (8613, 9460)]