257691840

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1295

約数の個数: 224

約数和(自身を含む): 965996544

約数和(自身を除く): 708304704

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, 420, 434, 448, 465, 480, 496, 560, 620, 651, 672, 744, 840, 868, 930, 960, 992, 1085, 1120, 1237, 1240, 1302, 1344, 1488, 1680, 1736, 1860, 1984, 2170, 2240, 2474, 2480, 2604, 2976, 3255, 3360, 3472, 3711, 3720, 4340, 4948, 4960, 5208, 5952, 6185, 6510, 6720, 6944, 7422, 7440, 8659, 8680, 9896, 9920, 10416, 12370, 13020, 13888, 14844, 14880, 17318, 17360, 18555, 19792, 20832, 24740, 25977, 26040, 29688, 29760, 34636, 34720, 37110, 38347, 39584, 41664, 43295, 49480, 51954, 52080, 59376, 69272, 69440, 74220, 76694, 79168, 86590, 98960, 103908, 104160, 115041, 118752, 129885, 138544, 148440, 153388, 173180, 191735, 197920, 207816, 208320, 230082, 237504, 259770, 268429, 277088, 296880, 306776, 346360, 383470, 395840, 415632, 460164, 519540, 536858, 554176, 575205, 593760, 613552, 692720, 766940, 805287, 831264, 920328, 1039080, 1073716, 1150410, 1187520, 1227104, 1342145, 1385440, 1533880, 1610574, 1662528, 1840656, 2078160, 2147432, 2300820, 2454208, 2684290, 2770880, 3067760, 3221148, 3681312, 4026435, 4156320, 4294864, 4601640, 5368580, 6135520, 6442296, 7362624, 8052870, 8312640, 8589728, 9203280, 10737160, 12271040, 12884592, 16105740, 17179456, 18406560, 21474320, 25769184, 32211480, 36813120, 42948640, 51538368, 64422960, 85897280, 128845920, 257691840]

約数ペア:

[(1, 257691840), (2, 128845920), (3, 85897280), (4, 64422960), (5, 51538368), (6, 42948640), (7, 36813120), (8, 32211480), (10, 25769184), (12, 21474320), (14, 18406560), (15, 17179456), (16, 16105740), (20, 12884592), (21, 12271040), (24, 10737160), (28, 9203280), (30, 8589728), (31, 8312640), (32, 8052870), (35, 7362624), (40, 6442296), (42, 6135520), (48, 5368580), (56, 4601640), (60, 4294864), (62, 4156320), (64, 4026435), (70, 3681312), (80, 3221148), (84, 3067760), (93, 2770880), (96, 2684290), (105, 2454208), (112, 2300820), (120, 2147432), (124, 2078160), (140, 1840656), (155, 1662528), (160, 1610574), (168, 1533880), (186, 1385440), (192, 1342145), (210, 1227104), (217, 1187520), (224, 1150410), (240, 1073716), (248, 1039080), (280, 920328), (310, 831264), (320, 805287), (336, 766940), (372, 692720), (420, 613552), (434, 593760), (448, 575205), (465, 554176), (480, 536858), (496, 519540), (560, 460164), (620, 415632), (651, 395840), (672, 383470), (744, 346360), (840, 306776), (868, 296880), (930, 277088), (960, 268429), (992, 259770), (1085, 237504), (1120, 230082), (1237, 208320), (1240, 207816), (1302, 197920), (1344, 191735), (1488, 173180), (1680, 153388), (1736, 148440), (1860, 138544), (1984, 129885), (2170, 118752), (2240, 115041), (2474, 104160), (2480, 103908), (2604, 98960), (2976, 86590), (3255, 79168), (3360, 76694), (3472, 74220), (3711, 69440), (3720, 69272), (4340, 59376), (4948, 52080), (4960, 51954), (5208, 49480), (5952, 43295), (6185, 41664), (6510, 39584), (6720, 38347), (6944, 37110), (7422, 34720), (7440, 34636), (8659, 29760), (8680, 29688), (9896, 26040), (9920, 25977), (10416, 24740), (12370, 20832), (13020, 19792), (13888, 18555), (14844, 17360), (14880, 17318)]