81381839

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{62171}}^1$

素因数の和:62206

約数の個数: 16

約数和(自身を含む): 107433216

約数和(自身を除く): 26051377

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 62171, 435197, 683881, 1056907, 4787167, 7398349, 11625977, 81381839]

約数ペア:

[(1, 81381839), (7, 11625977), (11, 7398349), (17, 4787167), (77, 1056907), (119, 683881), (187, 435197), (1309, 62171)]