20852481

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11080959

約数列:

[1, 3, 13, 19, 39, 57, 107, 247, 263, 321, 741, 789, 1391, 2033, 3419, 4173, 4997, 6099, 10257, 14991, 26429, 28141, 64961, 79287, 84423, 194883, 365833, 534679, 1097499, 1604037, 6950827, 20852481]

約数ペア:

[(1, 20852481), (3, 6950827), (13, 1604037), (19, 1097499), (39, 534679), (57, 365833), (107, 194883), (247, 84423), (263, 79287), (321, 64961), (741, 28141), (789, 26429), (1391, 14991), (2033, 10257), (3419, 6099), (4173, 4997)]