19938138

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1003

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 25452102

約数列:

[1, 2, 3, 6, 11, 22, 29, 33, 58, 66, 87, 121, 174, 242, 319, 363, 638, 726, 947, 957, 1894, 1914, 2841, 3509, 5682, 7018, 10417, 10527, 20834, 21054, 27463, 31251, 54926, 62502, 82389, 114587, 164778, 229174, 302093, 343761, 604186, 687522, 906279, 1812558, 3323023, 6646046, 9969069, 19938138]

約数ペア:

[(1, 19938138), (2, 9969069), (3, 6646046), (6, 3323023), (11, 1812558), (22, 906279), (29, 687522), (33, 604186), (58, 343761), (66, 302093), (87, 229174), (121, 164778), (174, 114587), (242, 82389), (319, 62502), (363, 54926), (638, 31251), (726, 27463), (947, 21054), (957, 20834), (1894, 10527), (1914, 10417), (2841, 7018), (3509, 5682)]