20390400

素因数分解:

$2^9\times 3^3\times 5^2\times {\mathrm{59}}^1$

素因数の和:96

約数の個数: 240

約数和(自身を含む): 76111200

約数和(自身を除く): 55720800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36, 40, 45, 48, 50, 54, 59, 60, 64, 72, 75, 80, 90, 96, 100, 108, 118, 120, 128, 135, 144, 150, 160, 177, 180, 192, 200, 216, 225, 236, 240, 256, 270, 288, 295, 300, 320, 354, 360, 384, 400, 432, 450, 472, 480, 512, 531, 540, 576, 590, 600, 640, 675, 708, 720, 768, 800, 864, 885, 900, 944, 960, 1062, 1080, 1152, 1180, 1200, 1280, 1350, 1416, 1440, 1475, 1536, 1593, 1600, 1728, 1770, 1800, 1888, 1920, 2124, 2160, 2304, 2360, 2400, 2560, 2655, 2700, 2832, 2880, 2950, 3186, 3200, 3456, 3540, 3600, 3776, 3840, 4248, 4320, 4425, 4608, 4720, 4800, 5310, 5400, 5664, 5760, 5900, 6372, 6400, 6912, 7080, 7200, 7552, 7680, 7965, 8496, 8640, 8850, 9440, 9600, 10620, 10800, 11328, 11520, 11800, 12744, 12800, 13275, 13824, 14160, 14400, 15104, 15930, 16992, 17280, 17700, 18880, 19200, 21240, 21600, 22656, 23040, 23600, 25488, 26550, 28320, 28800, 30208, 31860, 33984, 34560, 35400, 37760, 38400, 39825, 42480, 43200, 45312, 47200, 50976, 53100, 56640, 57600, 63720, 67968, 69120, 70800, 75520, 79650, 84960, 86400, 90624, 94400, 101952, 106200, 113280, 115200, 127440, 135936, 141600, 151040, 159300, 169920, 172800, 188800, 203904, 212400, 226560, 254880, 271872, 283200, 318600, 339840, 345600, 377600, 407808, 424800, 453120, 509760, 566400, 637200, 679680, 755200, 815616, 849600, 1019520, 1132800, 1274400, 1359360, 1699200, 2039040, 2265600, 2548800, 3398400, 4078080, 5097600, 6796800, 10195200, 20390400]

約数ペア:

[(1, 20390400), (2, 10195200), (3, 6796800), (4, 5097600), (5, 4078080), (6, 3398400), (8, 2548800), (9, 2265600), (10, 2039040), (12, 1699200), (15, 1359360), (16, 1274400), (18, 1132800), (20, 1019520), (24, 849600), (25, 815616), (27, 755200), (30, 679680), (32, 637200), (36, 566400), (40, 509760), (45, 453120), (48, 424800), (50, 407808), (54, 377600), (59, 345600), (60, 339840), (64, 318600), (72, 283200), (75, 271872), (80, 254880), (90, 226560), (96, 212400), (100, 203904), (108, 188800), (118, 172800), (120, 169920), (128, 159300), (135, 151040), (144, 141600), (150, 135936), (160, 127440), (177, 115200), (180, 113280), (192, 106200), (200, 101952), (216, 94400), (225, 90624), (236, 86400), (240, 84960), (256, 79650), (270, 75520), (288, 70800), (295, 69120), (300, 67968), (320, 63720), (354, 57600), (360, 56640), (384, 53100), (400, 50976), (432, 47200), (450, 45312), (472, 43200), (480, 42480), (512, 39825), (531, 38400), (540, 37760), (576, 35400), (590, 34560), (600, 33984), (640, 31860), (675, 30208), (708, 28800), (720, 28320), (768, 26550), (800, 25488), (864, 23600), (885, 23040), (900, 22656), (944, 21600), (960, 21240), (1062, 19200), (1080, 18880), (1152, 17700), (1180, 17280), (1200, 16992), (1280, 15930), (1350, 15104), (1416, 14400), (1440, 14160), (1475, 13824), (1536, 13275), (1593, 12800), (1600, 12744), (1728, 11800), (1770, 11520), (1800, 11328), (1888, 10800), (1920, 10620), (2124, 9600), (2160, 9440), (2304, 8850), (2360, 8640), (2400, 8496), (2560, 7965), (2655, 7680), (2700, 7552), (2832, 7200), (2880, 7080), (2950, 6912), (3186, 6400), (3200, 6372), (3456, 5900), (3540, 5760), (3600, 5664), (3776, 5400), (3840, 5310), (4248, 4800), (4320, 4720), (4425, 4608)]