21497636727

素因数分解:

$3^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{527407}}^1$

素因数の和:528067

約数の個数: 24

約数和(自身を含む): 35543079936

約数和(自身を除く): 14045443209

約数列:

[1, 3, 7, 9, 21, 63, 647, 1941, 4529, 5823, 13587, 40761, 527407, 1582221, 3691849, 4746663, 11075547, 33226641, 341232329, 1023696987, 2388626303, 3071090961, 7165878909, 21497636727]

約数ペア:

[(1, 21497636727), (3, 7165878909), (7, 3071090961), (9, 2388626303), (21, 1023696987), (63, 341232329), (647, 33226641), (1941, 11075547), (4529, 4746663), (5823, 3691849), (13587, 1582221), (40761, 527407)]