81378143

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{5839}}^1$

素因数の和:6038

約数の個数: 16

約数和(自身を含む): 102036480

約数和(自身を除く): 20658337

約数列:

[1, 7, 11, 77, 181, 1267, 1991, 5839, 13937, 40873, 64229, 449603, 1056859, 7398013, 11625449, 81378143]

約数ペア:

[(1, 81378143), (7, 11625449), (11, 7398013), (77, 1056859), (181, 449603), (1267, 64229), (1991, 40873), (5839, 13937)]