21180801

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{2053}}^1$

素因数の和:2256

約数の個数: 16

約数和(自身を含む): 29906240

約数和(自身を除く): 8725439

約数列:

[1, 3, 19, 57, 181, 543, 2053, 3439, 6159, 10317, 39007, 117021, 371593, 1114779, 7060267, 21180801]

約数ペア:

[(1, 21180801), (3, 7060267), (19, 1114779), (57, 371593), (181, 117021), (543, 39007), (2053, 10317), (3439, 6159)]