20287839

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 33796224

約数和(自身を除く): 13508385

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 131, 143, 209, 247, 361, 393, 429, 627, 741, 1083, 1441, 1703, 2489, 2717, 3971, 4323, 4693, 5109, 7467, 8151, 11913, 14079, 18733, 27379, 32357, 47291, 51623, 56199, 82137, 97071, 141873, 154869, 355927, 520201, 614783, 1067781, 1560603, 1844349, 6762613, 20287839]

約数ペア:

[(1, 20287839), (3, 6762613), (11, 1844349), (13, 1560603), (19, 1067781), (33, 614783), (39, 520201), (57, 355927), (131, 154869), (143, 141873), (209, 97071), (247, 82137), (361, 56199), (393, 51623), (429, 47291), (627, 32357), (741, 27379), (1083, 18733), (1441, 14079), (1703, 11913), (2489, 8151), (2717, 7467), (3971, 5109), (4323, 4693)]