18079460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 25829020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1451, 1780, 2492, 2902, 3115, 5804, 6230, 7255, 10157, 12460, 14510, 20314, 29020, 40628, 50785, 101570, 129139, 203140, 258278, 516556, 645695, 903973, 1291390, 1807946, 2582780, 3615892, 4519865, 9039730, 18079460]

約数ペア:

[(1, 18079460), (2, 9039730), (4, 4519865), (5, 3615892), (7, 2582780), (10, 1807946), (14, 1291390), (20, 903973), (28, 645695), (35, 516556), (70, 258278), (89, 203140), (140, 129139), (178, 101570), (356, 50785), (445, 40628), (623, 29020), (890, 20314), (1246, 14510), (1451, 12460), (1780, 10157), (2492, 7255), (2902, 6230), (3115, 5804)]