645419520

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:395

約数の個数: 240

約数和(自身を含む): 2264553720

約数和(自身を除く): 1619134200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 109, 120, 128, 144, 160, 180, 192, 218, 240, 256, 257, 288, 320, 327, 360, 384, 436, 480, 512, 514, 545, 576, 640, 654, 720, 768, 771, 872, 960, 981, 1028, 1090, 1152, 1280, 1285, 1308, 1440, 1536, 1542, 1635, 1744, 1920, 1962, 2056, 2180, 2304, 2313, 2560, 2570, 2616, 2880, 3084, 3270, 3488, 3840, 3855, 3924, 4112, 4360, 4608, 4626, 4905, 5140, 5232, 5760, 6168, 6540, 6976, 7680, 7710, 7848, 8224, 8720, 9252, 9810, 10280, 10464, 11520, 11565, 12336, 13080, 13952, 15420, 15696, 16448, 17440, 18504, 19620, 20560, 20928, 23040, 23130, 24672, 26160, 27904, 28013, 30840, 31392, 32896, 34880, 37008, 39240, 41120, 41856, 46260, 49344, 52320, 55808, 56026, 61680, 62784, 65792, 69760, 74016, 78480, 82240, 83712, 84039, 92520, 98688, 104640, 112052, 123360, 125568, 131584, 139520, 140065, 148032, 156960, 164480, 167424, 168078, 185040, 197376, 209280, 224104, 246720, 251136, 252117, 279040, 280130, 296064, 313920, 328960, 336156, 370080, 394752, 418560, 420195, 448208, 493440, 502272, 504234, 560260, 592128, 627840, 657920, 672312, 740160, 837120, 840390, 896416, 986880, 1008468, 1120520, 1184256, 1255680, 1260585, 1344624, 1480320, 1680780, 1792832, 1973760, 2016936, 2241040, 2511360, 2521170, 2689248, 2960640, 3361560, 3585664, 4033872, 4482080, 5042340, 5378496, 5921280, 6723120, 7171328, 8067744, 8964160, 10084680, 10756992, 13446240, 14342656, 16135488, 17928320, 20169360, 21513984, 26892480, 32270976, 35856640, 40338720, 43027968, 53784960, 64541952, 71713280, 80677440, 107569920, 129083904, 161354880, 215139840, 322709760, 645419520]

約数ペア:

[(1, 645419520), (2, 322709760), (3, 215139840), (4, 161354880), (5, 129083904), (6, 107569920), (8, 80677440), (9, 71713280), (10, 64541952), (12, 53784960), (15, 43027968), (16, 40338720), (18, 35856640), (20, 32270976), (24, 26892480), (30, 21513984), (32, 20169360), (36, 17928320), (40, 16135488), (45, 14342656), (48, 13446240), (60, 10756992), (64, 10084680), (72, 8964160), (80, 8067744), (90, 7171328), (96, 6723120), (109, 5921280), (120, 5378496), (128, 5042340), (144, 4482080), (160, 4033872), (180, 3585664), (192, 3361560), (218, 2960640), (240, 2689248), (256, 2521170), (257, 2511360), (288, 2241040), (320, 2016936), (327, 1973760), (360, 1792832), (384, 1680780), (436, 1480320), (480, 1344624), (512, 1260585), (514, 1255680), (545, 1184256), (576, 1120520), (640, 1008468), (654, 986880), (720, 896416), (768, 840390), (771, 837120), (872, 740160), (960, 672312), (981, 657920), (1028, 627840), (1090, 592128), (1152, 560260), (1280, 504234), (1285, 502272), (1308, 493440), (1440, 448208), (1536, 420195), (1542, 418560), (1635, 394752), (1744, 370080), (1920, 336156), (1962, 328960), (2056, 313920), (2180, 296064), (2304, 280130), (2313, 279040), (2560, 252117), (2570, 251136), (2616, 246720), (2880, 224104), (3084, 209280), (3270, 197376), (3488, 185040), (3840, 168078), (3855, 167424), (3924, 164480), (4112, 156960), (4360, 148032), (4608, 140065), (4626, 139520), (4905, 131584), (5140, 125568), (5232, 123360), (5760, 112052), (6168, 104640), (6540, 98688), (6976, 92520), (7680, 84039), (7710, 83712), (7848, 82240), (8224, 78480), (8720, 74016), (9252, 69760), (9810, 65792), (10280, 62784), (10464, 61680), (11520, 56026), (11565, 55808), (12336, 52320), (13080, 49344), (13952, 46260), (15420, 41856), (15696, 41120), (16448, 39240), (17440, 37008), (18504, 34880), (19620, 32896), (20560, 31392), (20928, 30840), (23040, 28013), (23130, 27904), (24672, 26160)]