81036480

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:447

約数の個数: 224

約数和(自身を含む): 304312320

約数和(自身を除く): 223275840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 64, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 192, 210, 217, 224, 240, 248, 280, 310, 320, 336, 372, 389, 420, 434, 448, 465, 480, 496, 560, 620, 651, 672, 744, 778, 840, 868, 930, 960, 992, 1085, 1120, 1167, 1240, 1302, 1344, 1488, 1556, 1680, 1736, 1860, 1945, 1984, 2170, 2240, 2334, 2480, 2604, 2723, 2976, 3112, 3255, 3360, 3472, 3720, 3890, 4340, 4668, 4960, 5208, 5446, 5835, 5952, 6224, 6510, 6720, 6944, 7440, 7780, 8169, 8680, 9336, 9920, 10416, 10892, 11670, 12059, 12448, 13020, 13615, 13888, 14880, 15560, 16338, 17360, 18672, 20832, 21784, 23340, 24118, 24896, 26040, 27230, 29760, 31120, 32676, 34720, 36177, 37344, 40845, 41664, 43568, 46680, 48236, 52080, 54460, 60295, 62240, 65352, 69440, 72354, 74688, 81690, 84413, 87136, 93360, 96472, 104160, 108920, 120590, 124480, 130704, 144708, 163380, 168826, 174272, 180885, 186720, 192944, 208320, 217840, 241180, 253239, 261408, 289416, 326760, 337652, 361770, 373440, 385888, 422065, 435680, 482360, 506478, 522816, 578832, 653520, 675304, 723540, 771776, 844130, 871360, 964720, 1012956, 1157664, 1266195, 1307040, 1350608, 1447080, 1688260, 1929440, 2025912, 2315328, 2532390, 2614080, 2701216, 2894160, 3376520, 3858880, 4051824, 5064780, 5402432, 5788320, 6753040, 8103648, 10129560, 11576640, 13506080, 16207296, 20259120, 27012160, 40518240, 81036480]

約数ペア:

[(1, 81036480), (2, 40518240), (3, 27012160), (4, 20259120), (5, 16207296), (6, 13506080), (7, 11576640), (8, 10129560), (10, 8103648), (12, 6753040), (14, 5788320), (15, 5402432), (16, 5064780), (20, 4051824), (21, 3858880), (24, 3376520), (28, 2894160), (30, 2701216), (31, 2614080), (32, 2532390), (35, 2315328), (40, 2025912), (42, 1929440), (48, 1688260), (56, 1447080), (60, 1350608), (62, 1307040), (64, 1266195), (70, 1157664), (80, 1012956), (84, 964720), (93, 871360), (96, 844130), (105, 771776), (112, 723540), (120, 675304), (124, 653520), (140, 578832), (155, 522816), (160, 506478), (168, 482360), (186, 435680), (192, 422065), (210, 385888), (217, 373440), (224, 361770), (240, 337652), (248, 326760), (280, 289416), (310, 261408), (320, 253239), (336, 241180), (372, 217840), (389, 208320), (420, 192944), (434, 186720), (448, 180885), (465, 174272), (480, 168826), (496, 163380), (560, 144708), (620, 130704), (651, 124480), (672, 120590), (744, 108920), (778, 104160), (840, 96472), (868, 93360), (930, 87136), (960, 84413), (992, 81690), (1085, 74688), (1120, 72354), (1167, 69440), (1240, 65352), (1302, 62240), (1344, 60295), (1488, 54460), (1556, 52080), (1680, 48236), (1736, 46680), (1860, 43568), (1945, 41664), (1984, 40845), (2170, 37344), (2240, 36177), (2334, 34720), (2480, 32676), (2604, 31120), (2723, 29760), (2976, 27230), (3112, 26040), (3255, 24896), (3360, 24118), (3472, 23340), (3720, 21784), (3890, 20832), (4340, 18672), (4668, 17360), (4960, 16338), (5208, 15560), (5446, 14880), (5835, 13888), (5952, 13615), (6224, 13020), (6510, 12448), (6720, 12059), (6944, 11670), (7440, 10892), (7780, 10416), (8169, 9920), (8680, 9336)]