20376759

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10830921

約数列:

[1, 3, 13, 19, 39, 57, 107, 247, 257, 321, 741, 771, 1391, 2033, 3341, 4173, 4883, 6099, 10023, 14649, 26429, 27499, 63479, 79287, 82497, 190437, 357487, 522481, 1072461, 1567443, 6792253, 20376759]

約数ペア:

[(1, 20376759), (3, 6792253), (13, 1567443), (19, 1072461), (39, 522481), (57, 357487), (107, 190437), (247, 82497), (257, 79287), (321, 63479), (741, 27499), (771, 26429), (1391, 14649), (2033, 10023), (3341, 6099), (4173, 4883)]