81028000

素因数分解:

$2^5\times 5^3\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 203793408

約数和(自身を除く): 122765408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 47, 50, 80, 94, 100, 125, 160, 188, 200, 235, 250, 376, 400, 431, 470, 500, 752, 800, 862, 940, 1000, 1175, 1504, 1724, 1880, 2000, 2155, 2350, 3448, 3760, 4000, 4310, 4700, 5875, 6896, 7520, 8620, 9400, 10775, 11750, 13792, 17240, 18800, 20257, 21550, 23500, 34480, 37600, 40514, 43100, 47000, 53875, 68960, 81028, 86200, 94000, 101285, 107750, 162056, 172400, 188000, 202570, 215500, 324112, 344800, 405140, 431000, 506425, 648224, 810280, 862000, 1012850, 1620560, 1724000, 2025700, 2532125, 3241120, 4051400, 5064250, 8102800, 10128500, 16205600, 20257000, 40514000, 81028000]

約数ペア:

[(1, 81028000), (2, 40514000), (4, 20257000), (5, 16205600), (8, 10128500), (10, 8102800), (16, 5064250), (20, 4051400), (25, 3241120), (32, 2532125), (40, 2025700), (47, 1724000), (50, 1620560), (80, 1012850), (94, 862000), (100, 810280), (125, 648224), (160, 506425), (188, 431000), (200, 405140), (235, 344800), (250, 324112), (376, 215500), (400, 202570), (431, 188000), (470, 172400), (500, 162056), (752, 107750), (800, 101285), (862, 94000), (940, 86200), (1000, 81028), (1175, 68960), (1504, 53875), (1724, 47000), (1880, 43100), (2000, 40514), (2155, 37600), (2350, 34480), (3448, 23500), (3760, 21550), (4000, 20257), (4310, 18800), (4700, 17240), (5875, 13792), (6896, 11750), (7520, 10775), (8620, 9400)]