21752020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47287}}^1$

素因数の和:47319

約数の個数: 24

約数和(自身を含む): 47666304

約数和(自身を除く): 25914284

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 47287, 94574, 189148, 236435, 472870, 945740, 1087601, 2175202, 4350404, 5438005, 10876010, 21752020]

約数ペア:

[(1, 21752020), (2, 10876010), (4, 5438005), (5, 4350404), (10, 2175202), (20, 1087601), (23, 945740), (46, 472870), (92, 236435), (115, 189148), (230, 94574), (460, 47287)]