81815040

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 240

約数和(自身を含む): 293003568

約数和(自身を除く): 211188528

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 53, 60, 64, 67, 72, 80, 90, 96, 106, 120, 128, 134, 144, 159, 160, 180, 192, 201, 212, 240, 256, 265, 268, 288, 318, 320, 335, 360, 384, 402, 424, 477, 480, 512, 530, 536, 576, 603, 636, 640, 670, 720, 768, 795, 804, 848, 954, 960, 1005, 1060, 1072, 1152, 1206, 1272, 1280, 1340, 1440, 1536, 1590, 1608, 1696, 1908, 1920, 2010, 2120, 2144, 2304, 2385, 2412, 2544, 2560, 2680, 2880, 3015, 3180, 3216, 3392, 3551, 3816, 3840, 4020, 4240, 4288, 4608, 4770, 4824, 5088, 5360, 5760, 6030, 6360, 6432, 6784, 7102, 7632, 7680, 8040, 8480, 8576, 9540, 9648, 10176, 10653, 10720, 11520, 12060, 12720, 12864, 13568, 14204, 15264, 16080, 16960, 17152, 17755, 19080, 19296, 20352, 21306, 21440, 23040, 24120, 25440, 25728, 27136, 28408, 30528, 31959, 32160, 33920, 34304, 35510, 38160, 38592, 40704, 42612, 42880, 48240, 50880, 51456, 53265, 56816, 61056, 63918, 64320, 67840, 71020, 76320, 77184, 81408, 85224, 85760, 96480, 101760, 102912, 106530, 113632, 122112, 127836, 128640, 135680, 142040, 152640, 154368, 159795, 170448, 171520, 192960, 203520, 213060, 227264, 244224, 255672, 257280, 284080, 305280, 308736, 319590, 340896, 385920, 407040, 426120, 454528, 511344, 514560, 568160, 610560, 639180, 681792, 771840, 852240, 909056, 1022688, 1136320, 1221120, 1278360, 1363584, 1543680, 1704480, 1818112, 2045376, 2272640, 2556720, 2727168, 3408960, 4090752, 4545280, 5113440, 5454336, 6817920, 8181504, 9090560, 10226880, 13635840, 16363008, 20453760, 27271680, 40907520, 81815040]

約数ペア:

[(1, 81815040), (2, 40907520), (3, 27271680), (4, 20453760), (5, 16363008), (6, 13635840), (8, 10226880), (9, 9090560), (10, 8181504), (12, 6817920), (15, 5454336), (16, 5113440), (18, 4545280), (20, 4090752), (24, 3408960), (30, 2727168), (32, 2556720), (36, 2272640), (40, 2045376), (45, 1818112), (48, 1704480), (53, 1543680), (60, 1363584), (64, 1278360), (67, 1221120), (72, 1136320), (80, 1022688), (90, 909056), (96, 852240), (106, 771840), (120, 681792), (128, 639180), (134, 610560), (144, 568160), (159, 514560), (160, 511344), (180, 454528), (192, 426120), (201, 407040), (212, 385920), (240, 340896), (256, 319590), (265, 308736), (268, 305280), (288, 284080), (318, 257280), (320, 255672), (335, 244224), (360, 227264), (384, 213060), (402, 203520), (424, 192960), (477, 171520), (480, 170448), (512, 159795), (530, 154368), (536, 152640), (576, 142040), (603, 135680), (636, 128640), (640, 127836), (670, 122112), (720, 113632), (768, 106530), (795, 102912), (804, 101760), (848, 96480), (954, 85760), (960, 85224), (1005, 81408), (1060, 77184), (1072, 76320), (1152, 71020), (1206, 67840), (1272, 64320), (1280, 63918), (1340, 61056), (1440, 56816), (1536, 53265), (1590, 51456), (1608, 50880), (1696, 48240), (1908, 42880), (1920, 42612), (2010, 40704), (2120, 38592), (2144, 38160), (2304, 35510), (2385, 34304), (2412, 33920), (2544, 32160), (2560, 31959), (2680, 30528), (2880, 28408), (3015, 27136), (3180, 25728), (3216, 25440), (3392, 24120), (3551, 23040), (3816, 21440), (3840, 21306), (4020, 20352), (4240, 19296), (4288, 19080), (4608, 17755), (4770, 17152), (4824, 16960), (5088, 16080), (5360, 15264), (5760, 14204), (6030, 13568), (6360, 12864), (6432, 12720), (6784, 12060), (7102, 11520), (7632, 10720), (7680, 10653), (8040, 10176), (8480, 9648), (8576, 9540)]