19901037

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10580883

約数列:

[1, 3, 13, 19, 39, 57, 107, 247, 251, 321, 741, 753, 1391, 2033, 3263, 4173, 4769, 6099, 9789, 14307, 26429, 26857, 61997, 79287, 80571, 185991, 349141, 510283, 1047423, 1530849, 6633679, 19901037]

約数ペア:

[(1, 19901037), (3, 6633679), (13, 1530849), (19, 1047423), (39, 510283), (57, 349141), (107, 185991), (247, 80571), (251, 79287), (321, 61997), (741, 26857), (753, 26429), (1391, 14307), (2033, 9789), (3263, 6099), (4173, 4769)]