18440253

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{397}}^2$

素因数の和:813

約数の個数: 18

約数和(自身を含む): 28757274

約数和(自身を除く): 10317021

約数列:

[1, 3, 9, 13, 39, 117, 397, 1191, 3573, 5161, 15483, 46449, 157609, 472827, 1418481, 2048917, 6146751, 18440253]

約数ペア:

[(1, 18440253), (3, 6146751), (9, 2048917), (13, 1418481), (39, 472827), (117, 157609), (397, 46449), (1191, 15483), (3573, 5161)]