21761663

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{691}}^1$

素因数の和:1118

約数の個数: 16

約数和(自身を含む): 27237120

約数和(自身を除く): 5475457

約数列:

[1, 7, 11, 77, 409, 691, 2863, 4499, 4837, 7601, 31493, 53207, 282619, 1978333, 3108809, 21761663]

約数ペア:

[(1, 21761663), (7, 3108809), (11, 1978333), (77, 282619), (409, 53207), (691, 31493), (2863, 7601), (4499, 4837)]