217920780

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1747}}^1$

素因数の和:1786

約数の個数: 240

約数和(自身を含む): 852800256

約数和(自身を除く): 634879476

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 54, 55, 60, 63, 66, 70, 77, 81, 84, 90, 99, 105, 108, 110, 126, 132, 135, 140, 154, 162, 165, 180, 189, 198, 210, 220, 231, 252, 270, 297, 308, 315, 324, 330, 378, 385, 396, 405, 420, 462, 495, 540, 567, 594, 630, 660, 693, 756, 770, 810, 891, 924, 945, 990, 1134, 1155, 1188, 1260, 1386, 1485, 1540, 1620, 1747, 1782, 1890, 1980, 2079, 2268, 2310, 2772, 2835, 2970, 3465, 3494, 3564, 3780, 4158, 4455, 4620, 5241, 5670, 5940, 6237, 6930, 6988, 8316, 8735, 8910, 10395, 10482, 11340, 12229, 12474, 13860, 15723, 17470, 17820, 19217, 20790, 20964, 24458, 24948, 26205, 31185, 31446, 34940, 36687, 38434, 41580, 47169, 48916, 52410, 57651, 61145, 62370, 62892, 73374, 76868, 78615, 94338, 96085, 104820, 110061, 115302, 122290, 124740, 134519, 141507, 146748, 157230, 172953, 183435, 188676, 192170, 220122, 230604, 235845, 244580, 269038, 283014, 288255, 314460, 330183, 345906, 366870, 384340, 403557, 440244, 471690, 518859, 538076, 550305, 566028, 576510, 660366, 672595, 691812, 707535, 733740, 807114, 864765, 943380, 990549, 1037718, 1100610, 1153020, 1210671, 1320732, 1345190, 1415070, 1556577, 1614228, 1650915, 1729530, 1981098, 2017785, 2075436, 2201220, 2421342, 2594295, 2690380, 2830140, 3113154, 3301830, 3459060, 3632013, 3962196, 4035570, 4842684, 4952745, 5188590, 6053355, 6226308, 6603660, 7264026, 7782885, 8071140, 9905490, 10377180, 10896039, 12106710, 14528052, 15565770, 18160065, 19810980, 21792078, 24213420, 31131540, 36320130, 43584156, 54480195, 72640260, 108960390, 217920780]

約数ペア:

[(1, 217920780), (2, 108960390), (3, 72640260), (4, 54480195), (5, 43584156), (6, 36320130), (7, 31131540), (9, 24213420), (10, 21792078), (11, 19810980), (12, 18160065), (14, 15565770), (15, 14528052), (18, 12106710), (20, 10896039), (21, 10377180), (22, 9905490), (27, 8071140), (28, 7782885), (30, 7264026), (33, 6603660), (35, 6226308), (36, 6053355), (42, 5188590), (44, 4952745), (45, 4842684), (54, 4035570), (55, 3962196), (60, 3632013), (63, 3459060), (66, 3301830), (70, 3113154), (77, 2830140), (81, 2690380), (84, 2594295), (90, 2421342), (99, 2201220), (105, 2075436), (108, 2017785), (110, 1981098), (126, 1729530), (132, 1650915), (135, 1614228), (140, 1556577), (154, 1415070), (162, 1345190), (165, 1320732), (180, 1210671), (189, 1153020), (198, 1100610), (210, 1037718), (220, 990549), (231, 943380), (252, 864765), (270, 807114), (297, 733740), (308, 707535), (315, 691812), (324, 672595), (330, 660366), (378, 576510), (385, 566028), (396, 550305), (405, 538076), (420, 518859), (462, 471690), (495, 440244), (540, 403557), (567, 384340), (594, 366870), (630, 345906), (660, 330183), (693, 314460), (756, 288255), (770, 283014), (810, 269038), (891, 244580), (924, 235845), (945, 230604), (990, 220122), (1134, 192170), (1155, 188676), (1188, 183435), (1260, 172953), (1386, 157230), (1485, 146748), (1540, 141507), (1620, 134519), (1747, 124740), (1782, 122290), (1890, 115302), (1980, 110061), (2079, 104820), (2268, 96085), (2310, 94338), (2772, 78615), (2835, 76868), (2970, 73374), (3465, 62892), (3494, 62370), (3564, 61145), (3780, 57651), (4158, 52410), (4455, 48916), (4620, 47169), (5241, 41580), (5670, 38434), (5940, 36687), (6237, 34940), (6930, 31446), (6988, 31185), (8316, 26205), (8735, 24948), (8910, 24458), (10395, 20964), (10482, 20790), (11340, 19217), (12229, 17820), (12474, 17470), (13860, 15723)]