82604800

素因数分解:

$2^8\times 5^2\times {\mathrm{12907}}^1$

素因数の和:12933

約数の個数: 54

約数和(自身を含む): 204475628

約数和(自身を除く): 121870828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 12907, 25814, 51628, 64535, 103256, 129070, 206512, 258140, 322675, 413024, 516280, 645350, 826048, 1032560, 1290700, 1652096, 2065120, 2581400, 3304192, 4130240, 5162800, 8260480, 10325600, 16520960, 20651200, 41302400, 82604800]

約数ペア:

[(1, 82604800), (2, 41302400), (4, 20651200), (5, 16520960), (8, 10325600), (10, 8260480), (16, 5162800), (20, 4130240), (25, 3304192), (32, 2581400), (40, 2065120), (50, 1652096), (64, 1290700), (80, 1032560), (100, 826048), (128, 645350), (160, 516280), (200, 413024), (256, 322675), (320, 258140), (400, 206512), (640, 129070), (800, 103256), (1280, 64535), (1600, 51628), (3200, 25814), (6400, 12907)]