638463866

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1\times {\mathrm{28409}}^1$

素因数の和:29089

約数の個数: 16

約数和(自身を含む): 1015600680

約数和(自身を除く): 377136814

約数列:

[1, 2, 17, 34, 661, 1322, 11237, 22474, 28409, 56818, 482953, 965906, 18778349, 37556698, 319231933, 638463866]

約数ペア:

[(1, 638463866), (2, 319231933), (17, 37556698), (34, 18778349), (661, 965906), (1322, 482953), (11237, 56818), (22474, 28409)]