20809646

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 38342160

約数和(自身を除く): 17532514

約数列:

[1, 2, 11, 13, 22, 26, 29, 58, 143, 169, 193, 286, 319, 338, 377, 386, 638, 754, 1859, 2123, 2509, 3718, 4147, 4246, 4901, 5018, 5597, 8294, 9802, 11194, 27599, 32617, 53911, 55198, 61567, 65234, 72761, 107822, 123134, 145522, 358787, 717574, 800371, 945893, 1600742, 1891786, 10404823, 20809646]

約数ペア:

[(1, 20809646), (2, 10404823), (11, 1891786), (13, 1600742), (22, 945893), (26, 800371), (29, 717574), (58, 358787), (143, 145522), (169, 123134), (193, 107822), (286, 72761), (319, 65234), (338, 61567), (377, 55198), (386, 53911), (638, 32617), (754, 27599), (1859, 11194), (2123, 9802), (2509, 8294), (3718, 5597), (4147, 5018), (4246, 4901)]