21556800

素因数分解:

$2^6\times 3^3\times 5^2\times {\mathrm{499}}^1$

素因数の和:530

約数の個数: 168

約数和(自身を含む): 78740000

約数和(自身を除く): 57183200

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, 60, 64, 72, 75, 80, 90, 96, 100, 108, 120, 135, 144, 150, 160, 180, 192, 200, 216, 225, 240, 270, 288, 300, 320, 360, 400, 432, 450, 480, 499, 540, 576, 600, 675, 720, 800, 864, 900, 960, 998, 1080, 1200, 1350, 1440, 1497, 1600, 1728, 1800, 1996, 2160, 2400, 2495, 2700, 2880, 2994, 3600, 3992, 4320, 4491, 4800, 4990, 5400, 5988, 7200, 7485, 7984, 8640, 8982, 9980, 10800, 11976, 12475, 13473, 14400, 14970, 15968, 17964, 19960, 21600, 22455, 23952, 24950, 26946, 29940, 31936, 35928, 37425, 39920, 43200, 44910, 47904, 49900, 53892, 59880, 67365, 71856, 74850, 79840, 89820, 95808, 99800, 107784, 112275, 119760, 134730, 143712, 149700, 159680, 179640, 199600, 215568, 224550, 239520, 269460, 287424, 299400, 336825, 359280, 399200, 431136, 449100, 479040, 538920, 598800, 673650, 718560, 798400, 862272, 898200, 1077840, 1197600, 1347300, 1437120, 1796400, 2155680, 2395200, 2694600, 3592800, 4311360, 5389200, 7185600, 10778400, 21556800]

約数ペア:

[(1, 21556800), (2, 10778400), (3, 7185600), (4, 5389200), (5, 4311360), (6, 3592800), (8, 2694600), (9, 2395200), (10, 2155680), (12, 1796400), (15, 1437120), (16, 1347300), (18, 1197600), (20, 1077840), (24, 898200), (25, 862272), (27, 798400), (30, 718560), (32, 673650), (36, 598800), (40, 538920), (45, 479040), (48, 449100), (50, 431136), (54, 399200), (60, 359280), (64, 336825), (72, 299400), (75, 287424), (80, 269460), (90, 239520), (96, 224550), (100, 215568), (108, 199600), (120, 179640), (135, 159680), (144, 149700), (150, 143712), (160, 134730), (180, 119760), (192, 112275), (200, 107784), (216, 99800), (225, 95808), (240, 89820), (270, 79840), (288, 74850), (300, 71856), (320, 67365), (360, 59880), (400, 53892), (432, 49900), (450, 47904), (480, 44910), (499, 43200), (540, 39920), (576, 37425), (600, 35928), (675, 31936), (720, 29940), (800, 26946), (864, 24950), (900, 23952), (960, 22455), (998, 21600), (1080, 19960), (1200, 17964), (1350, 15968), (1440, 14970), (1497, 14400), (1600, 13473), (1728, 12475), (1800, 11976), (1996, 10800), (2160, 9980), (2400, 8982), (2495, 8640), (2700, 7984), (2880, 7485), (2994, 7200), (3600, 5988), (3992, 5400), (4320, 4990), (4491, 4800)]