20403976348

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{194687}}^1$

素因数の和:194914

約数の個数: 48

約数和(自身を含む): 43174010880

約数和(自身を除く): 22770034532

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 197, 266, 394, 532, 788, 1379, 2758, 3743, 5516, 7486, 14972, 26201, 52402, 104804, 194687, 389374, 778748, 1362809, 2725618, 3699053, 5451236, 7398106, 14796212, 25893371, 38353339, 51786742, 76706678, 103573484, 153413356, 268473373, 536946746, 728713441, 1073893492, 1457426882, 2914853764, 5100994087, 10201988174, 20403976348]

約数ペア:

[(1, 20403976348), (2, 10201988174), (4, 5100994087), (7, 2914853764), (14, 1457426882), (19, 1073893492), (28, 728713441), (38, 536946746), (76, 268473373), (133, 153413356), (197, 103573484), (266, 76706678), (394, 51786742), (532, 38353339), (788, 25893371), (1379, 14796212), (2758, 7398106), (3743, 5451236), (5516, 3699053), (7486, 2725618), (14972, 1362809), (26201, 778748), (52402, 389374), (104804, 194687)]