20485157

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 6886363

約数列:

[1, 7, 11, 23, 43, 77, 161, 253, 269, 301, 473, 989, 1771, 1883, 2959, 3311, 6187, 6923, 10879, 11567, 20713, 43309, 68057, 76153, 80969, 127237, 266041, 476399, 890659, 1862287, 2926451, 20485157]

約数ペア:

[(1, 20485157), (7, 2926451), (11, 1862287), (23, 890659), (43, 476399), (77, 266041), (161, 127237), (253, 80969), (269, 76153), (301, 68057), (473, 43309), (989, 20713), (1771, 11567), (1883, 10879), (2959, 6923), (3311, 6187)]