18881397

素因数分解:

$3^3\times {\mathrm{419}}^1\times {\mathrm{1669}}^1$

素因数の和:2097

約数の個数: 16

約数和(自身を含む): 28056000

約数和(自身を除く): 9174603

約数列:

[1, 3, 9, 27, 419, 1257, 1669, 3771, 5007, 11313, 15021, 45063, 699311, 2097933, 6293799, 18881397]

約数ペア:

[(1, 18881397), (3, 6293799), (9, 2097933), (27, 699311), (419, 45063), (1257, 15021), (1669, 11313), (3771, 5007)]