21009459

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1871}}^1$

素因数の和:2090

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8643021

約数列:

[1, 3, 19, 57, 197, 591, 1871, 3743, 5613, 11229, 35549, 106647, 368587, 1105761, 7003153, 21009459]

約数ペア:

[(1, 21009459), (3, 7003153), (19, 1105761), (57, 368587), (197, 106647), (591, 35549), (1871, 11229), (3743, 5613)]