20939457

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90647}}^1$

素因数の和:90668

約数の個数: 16

約数和(自身を含む): 34808832

約数和(自身を除く): 13869375

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90647, 271941, 634529, 997117, 1903587, 2991351, 6979819, 20939457]

約数ペア:

[(1, 20939457), (3, 6979819), (7, 2991351), (11, 1903587), (21, 997117), (33, 634529), (77, 271941), (231, 90647)]