17981997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3343}}^1$

素因数の和:3520

約数の個数: 16

約数和(自身を含む): 26323968

約数和(自身を除く): 8341971

約数列:

[1, 3, 11, 33, 163, 489, 1793, 3343, 5379, 10029, 36773, 110319, 544909, 1634727, 5993999, 17981997]

約数ペア:

[(1, 17981997), (3, 5993999), (11, 1634727), (33, 544909), (163, 110319), (489, 36773), (1793, 10029), (3343, 5379)]