28289520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1871}}^1$

素因数の和:1900

約数の個数: 160

約数和(自身を含む): 111421440

約数和(自身を除く): 83131920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1871, 1890, 2160, 2520, 3024, 3742, 3780, 5040, 5613, 7484, 7560, 9355, 11226, 13097, 14968, 15120, 16839, 18710, 22452, 26194, 28065, 29936, 33678, 37420, 39291, 44904, 50517, 52388, 56130, 65485, 67356, 74840, 78582, 84195, 89808, 101034, 104776, 112260, 117873, 130970, 134712, 149680, 157164, 168390, 196455, 202068, 209552, 224520, 235746, 252585, 261940, 269424, 314328, 336780, 353619, 392910, 404136, 449040, 471492, 505170, 523880, 589365, 628656, 673560, 707238, 785820, 808272, 942984, 1010340, 1047760, 1178730, 1347120, 1414476, 1571640, 1768095, 1885968, 2020680, 2357460, 2828952, 3143280, 3536190, 4041360, 4714920, 5657904, 7072380, 9429840, 14144760, 28289520]

約数ペア:

[(1, 28289520), (2, 14144760), (3, 9429840), (4, 7072380), (5, 5657904), (6, 4714920), (7, 4041360), (8, 3536190), (9, 3143280), (10, 2828952), (12, 2357460), (14, 2020680), (15, 1885968), (16, 1768095), (18, 1571640), (20, 1414476), (21, 1347120), (24, 1178730), (27, 1047760), (28, 1010340), (30, 942984), (35, 808272), (36, 785820), (40, 707238), (42, 673560), (45, 628656), (48, 589365), (54, 523880), (56, 505170), (60, 471492), (63, 449040), (70, 404136), (72, 392910), (80, 353619), (84, 336780), (90, 314328), (105, 269424), (108, 261940), (112, 252585), (120, 235746), (126, 224520), (135, 209552), (140, 202068), (144, 196455), (168, 168390), (180, 157164), (189, 149680), (210, 134712), (216, 130970), (240, 117873), (252, 112260), (270, 104776), (280, 101034), (315, 89808), (336, 84195), (360, 78582), (378, 74840), (420, 67356), (432, 65485), (504, 56130), (540, 52388), (560, 50517), (630, 44904), (720, 39291), (756, 37420), (840, 33678), (945, 29936), (1008, 28065), (1080, 26194), (1260, 22452), (1512, 18710), (1680, 16839), (1871, 15120), (1890, 14968), (2160, 13097), (2520, 11226), (3024, 9355), (3742, 7560), (3780, 7484), (5040, 5613)]