81380468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{1565009}}^1$

素因数の和:1565026

約数の個数: 12

約数和(自身を含む): 153370980

約数和(自身を除く): 71990512

約数列:

[1, 2, 4, 13, 26, 52, 1565009, 3130018, 6260036, 20345117, 40690234, 81380468]

約数ペア:

[(1, 81380468), (2, 40690234), (4, 20345117), (13, 6260036), (26, 3130018), (52, 1565009)]