257259520

素因数分解:

$2^{11}\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:168

約数の個数: 192

約数和(自身を含む): 731989440

約数和(自身を除く): 474729920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 56, 64, 70, 74, 80, 97, 112, 128, 140, 148, 160, 185, 194, 224, 256, 259, 280, 296, 320, 370, 388, 448, 485, 512, 518, 560, 592, 640, 679, 740, 776, 896, 970, 1024, 1036, 1120, 1184, 1280, 1295, 1358, 1480, 1552, 1792, 1940, 2048, 2072, 2240, 2368, 2560, 2590, 2716, 2960, 3104, 3395, 3584, 3589, 3880, 4144, 4480, 4736, 5120, 5180, 5432, 5920, 6208, 6790, 7168, 7178, 7760, 8288, 8960, 9472, 10240, 10360, 10864, 11840, 12416, 13580, 14336, 14356, 15520, 16576, 17920, 17945, 18944, 20720, 21728, 23680, 24832, 25123, 27160, 28712, 31040, 33152, 35840, 35890, 37888, 41440, 43456, 47360, 49664, 50246, 54320, 57424, 62080, 66304, 71680, 71780, 75776, 82880, 86912, 94720, 99328, 100492, 108640, 114848, 124160, 125615, 132608, 143560, 165760, 173824, 189440, 198656, 200984, 217280, 229696, 248320, 251230, 265216, 287120, 331520, 347648, 378880, 401968, 434560, 459392, 496640, 502460, 530432, 574240, 663040, 695296, 803936, 869120, 918784, 993280, 1004920, 1148480, 1326080, 1390592, 1607872, 1738240, 1837568, 2009840, 2296960, 2652160, 3215744, 3476480, 3675136, 4019680, 4593920, 6431488, 6952960, 7350272, 8039360, 9187840, 12862976, 16078720, 18375680, 25725952, 32157440, 36751360, 51451904, 64314880, 128629760, 257259520]

約数ペア:

[(1, 257259520), (2, 128629760), (4, 64314880), (5, 51451904), (7, 36751360), (8, 32157440), (10, 25725952), (14, 18375680), (16, 16078720), (20, 12862976), (28, 9187840), (32, 8039360), (35, 7350272), (37, 6952960), (40, 6431488), (56, 4593920), (64, 4019680), (70, 3675136), (74, 3476480), (80, 3215744), (97, 2652160), (112, 2296960), (128, 2009840), (140, 1837568), (148, 1738240), (160, 1607872), (185, 1390592), (194, 1326080), (224, 1148480), (256, 1004920), (259, 993280), (280, 918784), (296, 869120), (320, 803936), (370, 695296), (388, 663040), (448, 574240), (485, 530432), (512, 502460), (518, 496640), (560, 459392), (592, 434560), (640, 401968), (679, 378880), (740, 347648), (776, 331520), (896, 287120), (970, 265216), (1024, 251230), (1036, 248320), (1120, 229696), (1184, 217280), (1280, 200984), (1295, 198656), (1358, 189440), (1480, 173824), (1552, 165760), (1792, 143560), (1940, 132608), (2048, 125615), (2072, 124160), (2240, 114848), (2368, 108640), (2560, 100492), (2590, 99328), (2716, 94720), (2960, 86912), (3104, 82880), (3395, 75776), (3584, 71780), (3589, 71680), (3880, 66304), (4144, 62080), (4480, 57424), (4736, 54320), (5120, 50246), (5180, 49664), (5432, 47360), (5920, 43456), (6208, 41440), (6790, 37888), (7168, 35890), (7178, 35840), (7760, 33152), (8288, 31040), (8960, 28712), (9472, 27160), (10240, 25123), (10360, 24832), (10864, 23680), (11840, 21728), (12416, 20720), (13580, 18944), (14336, 17945), (14356, 17920), (15520, 16576)]