249994240

素因数分解:

$2^{10}\times 5^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:493

約数の個数: 88

約数和(自身を含む): 605453472

約数和(自身を除く): 355459232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 311, 314, 320, 512, 622, 628, 640, 785, 1024, 1244, 1256, 1280, 1555, 1570, 2488, 2512, 2560, 3110, 3140, 4976, 5024, 5120, 6220, 6280, 9952, 10048, 12440, 12560, 19904, 20096, 24880, 25120, 39808, 40192, 48827, 49760, 50240, 79616, 80384, 97654, 99520, 100480, 159232, 160768, 195308, 199040, 200960, 244135, 318464, 390616, 398080, 401920, 488270, 781232, 796160, 803840, 976540, 1562464, 1592320, 1953080, 3124928, 3906160, 6249856, 7812320, 12499712, 15624640, 24999424, 31249280, 49998848, 62498560, 124997120, 249994240]

約数ペア:

[(1, 249994240), (2, 124997120), (4, 62498560), (5, 49998848), (8, 31249280), (10, 24999424), (16, 15624640), (20, 12499712), (32, 7812320), (40, 6249856), (64, 3906160), (80, 3124928), (128, 1953080), (157, 1592320), (160, 1562464), (256, 976540), (311, 803840), (314, 796160), (320, 781232), (512, 488270), (622, 401920), (628, 398080), (640, 390616), (785, 318464), (1024, 244135), (1244, 200960), (1256, 199040), (1280, 195308), (1555, 160768), (1570, 159232), (2488, 100480), (2512, 99520), (2560, 97654), (3110, 80384), (3140, 79616), (4976, 50240), (5024, 49760), (5120, 48827), (6220, 40192), (6280, 39808), (9952, 25120), (10048, 24880), (12440, 20096), (12560, 19904)]