399925442

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1680359}}^1$

素因数の和:1680385

約数の個数: 16

約数和(自身を含む): 725915520

約数和(自身を除く): 325990078

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 1680359, 3360718, 11762513, 23525026, 28566103, 57132206, 199962721, 399925442]

約数ペア:

[(1, 399925442), (2, 199962721), (7, 57132206), (14, 28566103), (17, 23525026), (34, 11762513), (119, 3360718), (238, 1680359)]