399388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 791280

約数和(自身を除く): 391892

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 116, 313, 319, 626, 638, 1252, 1276, 3443, 6886, 9077, 13772, 18154, 36308, 99847, 199694, 399388]

約数ペア:

[(1, 399388), (2, 199694), (4, 99847), (11, 36308), (22, 18154), (29, 13772), (44, 9077), (58, 6886), (116, 3443), (313, 1276), (319, 1252), (626, 638)]