20971379

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 25693200

約数和(自身を除く): 4721821

約数列:

[1, 11, 13, 29, 143, 169, 319, 377, 389, 1859, 4147, 4279, 4901, 5057, 11281, 53911, 55627, 65741, 124091, 146653, 723151, 1613183, 1906489, 20971379]

約数ペア:

[(1, 20971379), (11, 1906489), (13, 1613183), (29, 723151), (143, 146653), (169, 124091), (319, 65741), (377, 55627), (389, 53911), (1859, 11281), (4147, 5057), (4279, 4901)]