256688360

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{62303}}^1$

素因数の和:62417

約数の個数: 32

約数和(自身を含む): 583165440

約数和(自身を除く): 326477080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 62303, 124606, 249212, 311515, 498424, 623030, 1246060, 2492120, 6417209, 12834418, 25668836, 32086045, 51337672, 64172090, 128344180, 256688360]

約数ペア:

[(1, 256688360), (2, 128344180), (4, 64172090), (5, 51337672), (8, 32086045), (10, 25668836), (20, 12834418), (40, 6417209), (103, 2492120), (206, 1246060), (412, 623030), (515, 498424), (824, 311515), (1030, 249212), (2060, 124606), (4120, 62303)]