21304073

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{467}}^1$

素因数の和:514

約数の個数: 20

約数和(自身を含む): 26217360

約数和(自身を除く): 4913287

約数列:

[1, 7, 19, 49, 133, 343, 467, 931, 2401, 3269, 6517, 8873, 22883, 45619, 62111, 160181, 434777, 1121267, 3043439, 21304073]

約数ペア:

[(1, 21304073), (7, 3043439), (19, 1121267), (49, 434777), (133, 160181), (343, 62111), (467, 45619), (931, 22883), (2401, 8873), (3269, 6517)]