21392451

素因数分解:

$3^3\times {\mathrm{359}}^1\times {\mathrm{2207}}^1$

素因数の和:2575

約数の個数: 16

約数和(自身を含む): 31795200

約数和(自身を除く): 10402749

約数列:

[1, 3, 9, 27, 359, 1077, 2207, 3231, 6621, 9693, 19863, 59589, 792313, 2376939, 7130817, 21392451]

約数ペア:

[(1, 21392451), (3, 7130817), (9, 2376939), (27, 792313), (359, 59589), (1077, 19863), (2207, 9693), (3231, 6621)]