18388821

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{12959}}^1$

素因数の和:13016

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 8982699

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 12959, 38877, 142549, 427647, 557237, 1671711, 6129607, 18388821]

約数ペア:

[(1, 18388821), (3, 6129607), (11, 1671711), (33, 557237), (43, 427647), (129, 142549), (473, 38877), (1419, 12959)]