2790400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{109}}^1$

素因数の和:139

約数の個数: 66

約数和(自身を含む): 6980270

約数和(自身を除く): 4189870

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 109, 128, 160, 200, 218, 256, 320, 400, 436, 512, 545, 640, 800, 872, 1024, 1090, 1280, 1600, 1744, 2180, 2560, 2725, 3200, 3488, 4360, 5120, 5450, 6400, 6976, 8720, 10900, 12800, 13952, 17440, 21800, 25600, 27904, 34880, 43600, 55808, 69760, 87200, 111616, 139520, 174400, 279040, 348800, 558080, 697600, 1395200, 2790400]

約数ペア:

[(1, 2790400), (2, 1395200), (4, 697600), (5, 558080), (8, 348800), (10, 279040), (16, 174400), (20, 139520), (25, 111616), (32, 87200), (40, 69760), (50, 55808), (64, 43600), (80, 34880), (100, 27904), (109, 25600), (128, 21800), (160, 17440), (200, 13952), (218, 12800), (256, 10900), (320, 8720), (400, 6976), (436, 6400), (512, 5450), (545, 5120), (640, 4360), (800, 3488), (872, 3200), (1024, 2725), (1090, 2560), (1280, 2180), (1600, 1744)]