21197666

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1$

素因数の和:626

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 16818334

約数列:

[1, 2, 7, 14, 29, 58, 109, 203, 218, 406, 479, 763, 958, 1526, 3161, 3353, 6322, 6706, 13891, 22127, 27782, 44254, 52211, 97237, 104422, 194474, 365477, 730954, 1514119, 3028238, 10598833, 21197666]

約数ペア:

[(1, 21197666), (2, 10598833), (7, 3028238), (14, 1514119), (29, 730954), (58, 365477), (109, 194474), (203, 104422), (218, 97237), (406, 52211), (479, 44254), (763, 27782), (958, 22127), (1526, 13891), (3161, 6706), (3353, 6322)]