639982

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2689}}^1$

素因数の和:2715

約数の個数: 16

約数和(自身を含む): 1162080

約数和(自身を除く): 522098

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 2689, 5378, 18823, 37646, 45713, 91426, 319991, 639982]

約数ペア:

[(1, 639982), (2, 319991), (7, 91426), (14, 45713), (17, 37646), (34, 18823), (119, 5378), (238, 2689)]