18671553

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{3907}}^1$

素因数の和:3978

約数の個数: 20

約数和(自身を含む): 28372080

約数和(自身を除く): 9700527

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 3907, 4779, 11721, 35163, 105489, 230513, 316467, 691539, 2074617, 6223851, 18671553]

約数ペア:

[(1, 18671553), (3, 6223851), (9, 2074617), (27, 691539), (59, 316467), (81, 230513), (177, 105489), (531, 35163), (1593, 11721), (3907, 4779)]