18639998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{1997}}^1$

素因数の和:2371

約数の個数: 16

約数和(自身を含む): 30209760

約数和(自身を除く): 11569762

約数列:

[1, 2, 13, 26, 359, 718, 1997, 3994, 4667, 9334, 25961, 51922, 716923, 1433846, 9319999, 18639998]

約数ペア:

[(1, 18639998), (2, 9319999), (13, 1433846), (26, 716923), (359, 51922), (718, 25961), (1997, 9334), (3994, 4667)]