2255260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 5503680

約数和(自身を除く): 3248420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 181, 356, 362, 445, 623, 724, 890, 905, 1246, 1267, 1780, 1810, 2492, 2534, 3115, 3620, 5068, 6230, 6335, 12460, 12670, 16109, 25340, 32218, 64436, 80545, 112763, 161090, 225526, 322180, 451052, 563815, 1127630, 2255260]

約数ペア:

[(1, 2255260), (2, 1127630), (4, 563815), (5, 451052), (7, 322180), (10, 225526), (14, 161090), (20, 112763), (28, 80545), (35, 64436), (70, 32218), (89, 25340), (140, 16109), (178, 12670), (181, 12460), (356, 6335), (362, 6230), (445, 5068), (623, 3620), (724, 3115), (890, 2534), (905, 2492), (1246, 1810), (1267, 1780)]