2155580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 5261760

約数和(自身を除く): 3106180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 173, 178, 346, 356, 445, 623, 692, 865, 890, 1211, 1246, 1730, 1780, 2422, 2492, 3115, 3460, 4844, 6055, 6230, 12110, 12460, 15397, 24220, 30794, 61588, 76985, 107779, 153970, 215558, 307940, 431116, 538895, 1077790, 2155580]

約数ペア:

[(1, 2155580), (2, 1077790), (4, 538895), (5, 431116), (7, 307940), (10, 215558), (14, 153970), (20, 107779), (28, 76985), (35, 61588), (70, 30794), (89, 24220), (140, 15397), (173, 12460), (178, 12110), (346, 6230), (356, 6055), (445, 4844), (623, 3460), (692, 3115), (865, 2492), (890, 2422), (1211, 1780), (1246, 1730)]