258657280

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{1031}}^1$

素因数の和:1070

約数の個数: 132

約数和(自身を含む): 722476368

約数和(自身を除く): 463819088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 784, 896, 980, 1024, 1031, 1120, 1280, 1568, 1792, 1960, 2062, 2240, 2560, 3136, 3584, 3920, 4124, 4480, 5120, 5155, 6272, 7168, 7217, 7840, 8248, 8960, 10310, 12544, 14434, 15680, 16496, 17920, 20620, 25088, 28868, 31360, 32992, 35840, 36085, 41240, 50176, 50519, 57736, 62720, 65984, 72170, 82480, 101038, 115472, 125440, 131968, 144340, 164960, 202076, 230944, 250880, 252595, 263936, 288680, 329920, 404152, 461888, 505190, 527872, 577360, 659840, 808304, 923776, 1010380, 1055744, 1154720, 1319680, 1616608, 1847552, 2020760, 2309440, 2639360, 3233216, 3695104, 4041520, 4618880, 5278720, 6466432, 7390208, 8083040, 9237760, 12932864, 16166080, 18475520, 25865728, 32332160, 36951040, 51731456, 64664320, 129328640, 258657280]

約数ペア:

[(1, 258657280), (2, 129328640), (4, 64664320), (5, 51731456), (7, 36951040), (8, 32332160), (10, 25865728), (14, 18475520), (16, 16166080), (20, 12932864), (28, 9237760), (32, 8083040), (35, 7390208), (40, 6466432), (49, 5278720), (56, 4618880), (64, 4041520), (70, 3695104), (80, 3233216), (98, 2639360), (112, 2309440), (128, 2020760), (140, 1847552), (160, 1616608), (196, 1319680), (224, 1154720), (245, 1055744), (256, 1010380), (280, 923776), (320, 808304), (392, 659840), (448, 577360), (490, 527872), (512, 505190), (560, 461888), (640, 404152), (784, 329920), (896, 288680), (980, 263936), (1024, 252595), (1031, 250880), (1120, 230944), (1280, 202076), (1568, 164960), (1792, 144340), (1960, 131968), (2062, 125440), (2240, 115472), (2560, 101038), (3136, 82480), (3584, 72170), (3920, 65984), (4124, 62720), (4480, 57736), (5120, 50519), (5155, 50176), (6272, 41240), (7168, 36085), (7217, 35840), (7840, 32992), (8248, 31360), (8960, 28868), (10310, 25088), (12544, 20620), (14434, 17920), (15680, 16496)]