21985527

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{2131}}^1$

素因数の和:2334

約数の個数: 16

約数和(自身を含む): 31041920

約数和(自身を除く): 9056393

約数列:

[1, 3, 19, 57, 181, 543, 2131, 3439, 6393, 10317, 40489, 121467, 385711, 1157133, 7328509, 21985527]

約数ペア:

[(1, 21985527), (3, 7328509), (19, 1157133), (57, 385711), (181, 121467), (543, 40489), (2131, 10317), (3439, 6393)]