18270720

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 240

約数和(自身を含む): 69261192

約数和(自身を除く): 50990472

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 61, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 122, 128, 130, 144, 156, 160, 180, 183, 192, 195, 208, 234, 240, 244, 256, 260, 288, 305, 312, 320, 360, 366, 384, 390, 416, 468, 480, 488, 512, 520, 549, 576, 585, 610, 624, 640, 720, 732, 768, 780, 793, 832, 915, 936, 960, 976, 1040, 1098, 1152, 1170, 1220, 1248, 1280, 1440, 1464, 1536, 1560, 1586, 1664, 1830, 1872, 1920, 1952, 2080, 2196, 2304, 2340, 2379, 2440, 2496, 2560, 2745, 2880, 2928, 3120, 3172, 3328, 3660, 3744, 3840, 3904, 3965, 4160, 4392, 4608, 4680, 4758, 4880, 4992, 5490, 5760, 5856, 6240, 6344, 6656, 7137, 7320, 7488, 7680, 7808, 7930, 8320, 8784, 9360, 9516, 9760, 9984, 10980, 11520, 11712, 11895, 12480, 12688, 14274, 14640, 14976, 15616, 15860, 16640, 17568, 18720, 19032, 19520, 19968, 21960, 23040, 23424, 23790, 24960, 25376, 28548, 29280, 29952, 31232, 31720, 33280, 35136, 35685, 37440, 38064, 39040, 43920, 46848, 47580, 49920, 50752, 57096, 58560, 59904, 63440, 70272, 71370, 74880, 76128, 78080, 87840, 93696, 95160, 99840, 101504, 114192, 117120, 126880, 140544, 142740, 149760, 152256, 156160, 175680, 190320, 203008, 228384, 234240, 253760, 281088, 285480, 299520, 304512, 351360, 380640, 406016, 456768, 468480, 507520, 570960, 609024, 702720, 761280, 913536, 1015040, 1141920, 1218048, 1405440, 1522560, 1827072, 2030080, 2283840, 3045120, 3654144, 4567680, 6090240, 9135360, 18270720]

約数ペア:

[(1, 18270720), (2, 9135360), (3, 6090240), (4, 4567680), (5, 3654144), (6, 3045120), (8, 2283840), (9, 2030080), (10, 1827072), (12, 1522560), (13, 1405440), (15, 1218048), (16, 1141920), (18, 1015040), (20, 913536), (24, 761280), (26, 702720), (30, 609024), (32, 570960), (36, 507520), (39, 468480), (40, 456768), (45, 406016), (48, 380640), (52, 351360), (60, 304512), (61, 299520), (64, 285480), (65, 281088), (72, 253760), (78, 234240), (80, 228384), (90, 203008), (96, 190320), (104, 175680), (117, 156160), (120, 152256), (122, 149760), (128, 142740), (130, 140544), (144, 126880), (156, 117120), (160, 114192), (180, 101504), (183, 99840), (192, 95160), (195, 93696), (208, 87840), (234, 78080), (240, 76128), (244, 74880), (256, 71370), (260, 70272), (288, 63440), (305, 59904), (312, 58560), (320, 57096), (360, 50752), (366, 49920), (384, 47580), (390, 46848), (416, 43920), (468, 39040), (480, 38064), (488, 37440), (512, 35685), (520, 35136), (549, 33280), (576, 31720), (585, 31232), (610, 29952), (624, 29280), (640, 28548), (720, 25376), (732, 24960), (768, 23790), (780, 23424), (793, 23040), (832, 21960), (915, 19968), (936, 19520), (960, 19032), (976, 18720), (1040, 17568), (1098, 16640), (1152, 15860), (1170, 15616), (1220, 14976), (1248, 14640), (1280, 14274), (1440, 12688), (1464, 12480), (1536, 11895), (1560, 11712), (1586, 11520), (1664, 10980), (1830, 9984), (1872, 9760), (1920, 9516), (1952, 9360), (2080, 8784), (2196, 8320), (2304, 7930), (2340, 7808), (2379, 7680), (2440, 7488), (2496, 7320), (2560, 7137), (2745, 6656), (2880, 6344), (2928, 6240), (3120, 5856), (3172, 5760), (3328, 5490), (3660, 4992), (3744, 4880), (3840, 4758), (3904, 4680), (3965, 4608), (4160, 4392)]