840390400

素因数分解:

$2^8\times 5^2\times {\mathrm{131311}}^1$

素因数の和:131337

約数の個数: 54

約数和(自身を含む): 2080113392

約数和(自身を除く): 1239722992

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, 131311, 262622, 525244, 656555, 1050488, 1313110, 2100976, 2626220, 3282775, 4201952, 5252440, 6565550, 8403904, 10504880, 13131100, 16807808, 21009760, 26262200, 33615616, 42019520, 52524400, 84039040, 105048800, 168078080, 210097600, 420195200, 840390400]

約数ペア:

[(1, 840390400), (2, 420195200), (4, 210097600), (5, 168078080), (8, 105048800), (10, 84039040), (16, 52524400), (20, 42019520), (25, 33615616), (32, 26262200), (40, 21009760), (50, 16807808), (64, 13131100), (80, 10504880), (100, 8403904), (128, 6565550), (160, 5252440), (200, 4201952), (256, 3282775), (320, 2626220), (400, 2100976), (640, 1313110), (800, 1050488), (1280, 656555), (1600, 525244), (3200, 262622), (6400, 131311)]