25180000

素因数分解:

$2^5\times 5^4\times {\mathrm{1259}}^1$

素因数の和:1289

約数の個数: 60

約数和(自身を含む): 61995780

約数和(自身を除く): 36815780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1259, 2000, 2500, 2518, 4000, 5000, 5036, 6295, 10000, 10072, 12590, 20000, 20144, 25180, 31475, 40288, 50360, 62950, 100720, 125900, 157375, 201440, 251800, 314750, 503600, 629500, 786875, 1007200, 1259000, 1573750, 2518000, 3147500, 5036000, 6295000, 12590000, 25180000]

約数ペア:

[(1, 25180000), (2, 12590000), (4, 6295000), (5, 5036000), (8, 3147500), (10, 2518000), (16, 1573750), (20, 1259000), (25, 1007200), (32, 786875), (40, 629500), (50, 503600), (80, 314750), (100, 251800), (125, 201440), (160, 157375), (200, 125900), (250, 100720), (400, 62950), (500, 50360), (625, 40288), (800, 31475), (1000, 25180), (1250, 20144), (1259, 20000), (2000, 12590), (2500, 10072), (2518, 10000), (4000, 6295), (5000, 5036)]