20980800

素因数分解:

$2^6\times 3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:106

約数の個数: 252

約数和(自身を含む): 78614016

約数和(自身を除く): 57633216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 31, 32, 36, 40, 45, 47, 48, 50, 60, 62, 64, 72, 75, 80, 90, 93, 94, 96, 100, 120, 124, 141, 144, 150, 155, 160, 180, 186, 188, 192, 200, 225, 235, 240, 248, 279, 282, 288, 300, 310, 320, 360, 372, 376, 400, 423, 450, 465, 470, 480, 496, 558, 564, 576, 600, 620, 705, 720, 744, 752, 775, 800, 846, 900, 930, 940, 960, 992, 1116, 1128, 1175, 1200, 1240, 1395, 1410, 1440, 1457, 1488, 1504, 1550, 1600, 1692, 1800, 1860, 1880, 1984, 2115, 2232, 2256, 2325, 2350, 2400, 2480, 2790, 2820, 2880, 2914, 2976, 3008, 3100, 3384, 3525, 3600, 3720, 3760, 4230, 4371, 4464, 4512, 4650, 4700, 4800, 4960, 5580, 5640, 5828, 5952, 6200, 6768, 6975, 7050, 7200, 7285, 7440, 7520, 8460, 8742, 8928, 9024, 9300, 9400, 9920, 10575, 11160, 11280, 11656, 12400, 13113, 13536, 13950, 14100, 14400, 14570, 14880, 15040, 16920, 17484, 17856, 18600, 18800, 21150, 21855, 22320, 22560, 23312, 24800, 26226, 27072, 27900, 28200, 29140, 29760, 33840, 34968, 36425, 37200, 37600, 42300, 43710, 44640, 45120, 46624, 49600, 52452, 55800, 56400, 58280, 65565, 67680, 69936, 72850, 74400, 75200, 84600, 87420, 89280, 93248, 104904, 109275, 111600, 112800, 116560, 131130, 135360, 139872, 145700, 148800, 169200, 174840, 209808, 218550, 223200, 225600, 233120, 262260, 279744, 291400, 327825, 338400, 349680, 419616, 437100, 446400, 466240, 524520, 582800, 655650, 676800, 699360, 839232, 874200, 1049040, 1165600, 1311300, 1398720, 1748400, 2098080, 2331200, 2622600, 3496800, 4196160, 5245200, 6993600, 10490400, 20980800]

約数ペア:

[(1, 20980800), (2, 10490400), (3, 6993600), (4, 5245200), (5, 4196160), (6, 3496800), (8, 2622600), (9, 2331200), (10, 2098080), (12, 1748400), (15, 1398720), (16, 1311300), (18, 1165600), (20, 1049040), (24, 874200), (25, 839232), (30, 699360), (31, 676800), (32, 655650), (36, 582800), (40, 524520), (45, 466240), (47, 446400), (48, 437100), (50, 419616), (60, 349680), (62, 338400), (64, 327825), (72, 291400), (75, 279744), (80, 262260), (90, 233120), (93, 225600), (94, 223200), (96, 218550), (100, 209808), (120, 174840), (124, 169200), (141, 148800), (144, 145700), (150, 139872), (155, 135360), (160, 131130), (180, 116560), (186, 112800), (188, 111600), (192, 109275), (200, 104904), (225, 93248), (235, 89280), (240, 87420), (248, 84600), (279, 75200), (282, 74400), (288, 72850), (300, 69936), (310, 67680), (320, 65565), (360, 58280), (372, 56400), (376, 55800), (400, 52452), (423, 49600), (450, 46624), (465, 45120), (470, 44640), (480, 43710), (496, 42300), (558, 37600), (564, 37200), (576, 36425), (600, 34968), (620, 33840), (705, 29760), (720, 29140), (744, 28200), (752, 27900), (775, 27072), (800, 26226), (846, 24800), (900, 23312), (930, 22560), (940, 22320), (960, 21855), (992, 21150), (1116, 18800), (1128, 18600), (1175, 17856), (1200, 17484), (1240, 16920), (1395, 15040), (1410, 14880), (1440, 14570), (1457, 14400), (1488, 14100), (1504, 13950), (1550, 13536), (1600, 13113), (1692, 12400), (1800, 11656), (1860, 11280), (1880, 11160), (1984, 10575), (2115, 9920), (2232, 9400), (2256, 9300), (2325, 9024), (2350, 8928), (2400, 8742), (2480, 8460), (2790, 7520), (2820, 7440), (2880, 7285), (2914, 7200), (2976, 7050), (3008, 6975), (3100, 6768), (3384, 6200), (3525, 5952), (3600, 5828), (3720, 5640), (3760, 5580), (4230, 4960), (4371, 4800), (4464, 4700), (4512, 4650)]