21209156638

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{1288997}}^1$

素因数の和:1289451

約数の個数: 16

約数和(自身を含む): 33565507920

約数和(自身を除く): 12356351282

約数列:

[1, 2, 19, 38, 433, 866, 8227, 16454, 1288997, 2577994, 24490943, 48981886, 558135701, 1116271402, 10604578319, 21209156638]

約数ペア:

[(1, 21209156638), (2, 10604578319), (19, 1116271402), (38, 558135701), (433, 48981886), (866, 24490943), (8227, 2577994), (16454, 1288997)]