397580

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 847392

約数和(自身を除く): 449812

約数列:

[1, 2, 4, 5, 10, 20, 103, 193, 206, 386, 412, 515, 772, 965, 1030, 1930, 2060, 3860, 19879, 39758, 79516, 99395, 198790, 397580]

約数ペア:

[(1, 397580), (2, 198790), (4, 99395), (5, 79516), (10, 39758), (20, 19879), (103, 3860), (193, 2060), (206, 1930), (386, 1030), (412, 965), (515, 772)]