21665280

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:77

約数の個数: 320

約数和(自身を含む): 87994368

約数和(自身を除く): 66329088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 31, 32, 35, 39, 40, 42, 48, 52, 56, 60, 62, 64, 65, 70, 78, 80, 84, 91, 93, 96, 104, 105, 112, 120, 124, 128, 130, 140, 155, 156, 160, 168, 182, 186, 192, 195, 208, 210, 217, 224, 240, 248, 256, 260, 273, 280, 310, 312, 320, 336, 364, 372, 384, 390, 403, 416, 420, 434, 448, 455, 465, 480, 496, 512, 520, 546, 560, 620, 624, 640, 651, 672, 728, 744, 768, 780, 806, 832, 840, 868, 896, 910, 930, 960, 992, 1040, 1085, 1092, 1120, 1209, 1240, 1248, 1280, 1302, 1344, 1365, 1456, 1488, 1536, 1560, 1612, 1664, 1680, 1736, 1792, 1820, 1860, 1920, 1984, 2015, 2080, 2170, 2184, 2240, 2418, 2480, 2496, 2560, 2604, 2688, 2730, 2821, 2912, 2976, 3120, 3224, 3255, 3328, 3360, 3472, 3584, 3640, 3720, 3840, 3968, 4030, 4160, 4340, 4368, 4480, 4836, 4960, 4992, 5208, 5376, 5460, 5642, 5824, 5952, 6045, 6240, 6448, 6510, 6656, 6720, 6944, 7280, 7440, 7680, 7936, 8060, 8320, 8463, 8680, 8736, 8960, 9672, 9920, 9984, 10416, 10752, 10920, 11284, 11648, 11904, 12090, 12480, 12896, 13020, 13440, 13888, 14105, 14560, 14880, 15872, 16120, 16640, 16926, 17360, 17472, 17920, 19344, 19840, 19968, 20832, 21840, 22568, 23296, 23808, 24180, 24960, 25792, 26040, 26880, 27776, 28210, 29120, 29760, 32240, 33280, 33852, 34720, 34944, 38688, 39680, 41664, 42315, 43680, 45136, 46592, 47616, 48360, 49920, 51584, 52080, 53760, 55552, 56420, 58240, 59520, 64480, 67704, 69440, 69888, 77376, 79360, 83328, 84630, 87360, 90272, 96720, 99840, 103168, 104160, 111104, 112840, 116480, 119040, 128960, 135408, 138880, 139776, 154752, 166656, 169260, 174720, 180544, 193440, 206336, 208320, 225680, 232960, 238080, 257920, 270816, 277760, 309504, 333312, 338520, 349440, 361088, 386880, 416640, 451360, 515840, 541632, 555520, 619008, 677040, 698880, 722176, 773760, 833280, 902720, 1031680, 1083264, 1354080, 1444352, 1547520, 1666560, 1805440, 2166528, 2708160, 3095040, 3610880, 4333056, 5416320, 7221760, 10832640, 21665280]

約数ペア:

[(1, 21665280), (2, 10832640), (3, 7221760), (4, 5416320), (5, 4333056), (6, 3610880), (7, 3095040), (8, 2708160), (10, 2166528), (12, 1805440), (13, 1666560), (14, 1547520), (15, 1444352), (16, 1354080), (20, 1083264), (21, 1031680), (24, 902720), (26, 833280), (28, 773760), (30, 722176), (31, 698880), (32, 677040), (35, 619008), (39, 555520), (40, 541632), (42, 515840), (48, 451360), (52, 416640), (56, 386880), (60, 361088), (62, 349440), (64, 338520), (65, 333312), (70, 309504), (78, 277760), (80, 270816), (84, 257920), (91, 238080), (93, 232960), (96, 225680), (104, 208320), (105, 206336), (112, 193440), (120, 180544), (124, 174720), (128, 169260), (130, 166656), (140, 154752), (155, 139776), (156, 138880), (160, 135408), (168, 128960), (182, 119040), (186, 116480), (192, 112840), (195, 111104), (208, 104160), (210, 103168), (217, 99840), (224, 96720), (240, 90272), (248, 87360), (256, 84630), (260, 83328), (273, 79360), (280, 77376), (310, 69888), (312, 69440), (320, 67704), (336, 64480), (364, 59520), (372, 58240), (384, 56420), (390, 55552), (403, 53760), (416, 52080), (420, 51584), (434, 49920), (448, 48360), (455, 47616), (465, 46592), (480, 45136), (496, 43680), (512, 42315), (520, 41664), (546, 39680), (560, 38688), (620, 34944), (624, 34720), (640, 33852), (651, 33280), (672, 32240), (728, 29760), (744, 29120), (768, 28210), (780, 27776), (806, 26880), (832, 26040), (840, 25792), (868, 24960), (896, 24180), (910, 23808), (930, 23296), (960, 22568), (992, 21840), (1040, 20832), (1085, 19968), (1092, 19840), (1120, 19344), (1209, 17920), (1240, 17472), (1248, 17360), (1280, 16926), (1302, 16640), (1344, 16120), (1365, 15872), (1456, 14880), (1488, 14560), (1536, 14105), (1560, 13888), (1612, 13440), (1664, 13020), (1680, 12896), (1736, 12480), (1792, 12090), (1820, 11904), (1860, 11648), (1920, 11284), (1984, 10920), (2015, 10752), (2080, 10416), (2170, 9984), (2184, 9920), (2240, 9672), (2418, 8960), (2480, 8736), (2496, 8680), (2560, 8463), (2604, 8320), (2688, 8060), (2730, 7936), (2821, 7680), (2912, 7440), (2976, 7280), (3120, 6944), (3224, 6720), (3255, 6656), (3328, 6510), (3360, 6448), (3472, 6240), (3584, 6045), (3640, 5952), (3720, 5824), (3840, 5642), (3968, 5460), (4030, 5376), (4160, 5208), (4340, 4992), (4368, 4960), (4480, 4836)]