129828080

素因数分解:

$2^4\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{1289}}^1$

素因数の和:2561

約数の個数: 40

約数和(自身を含む): 302324400

約数和(自身を除く): 172496320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1259, 1289, 2518, 2578, 5036, 5156, 6295, 6445, 10072, 10312, 12590, 12890, 20144, 20624, 25180, 25780, 50360, 51560, 100720, 103120, 1622851, 3245702, 6491404, 8114255, 12982808, 16228510, 25965616, 32457020, 64914040, 129828080]

約数ペア:

[(1, 129828080), (2, 64914040), (4, 32457020), (5, 25965616), (8, 16228510), (10, 12982808), (16, 8114255), (20, 6491404), (40, 3245702), (80, 1622851), (1259, 103120), (1289, 100720), (2518, 51560), (2578, 50360), (5036, 25780), (5156, 25180), (6295, 20624), (6445, 20144), (10072, 12890), (10312, 12590)]