18539665

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1627}}^1$

素因数の和:1728

約数の個数: 16

約数和(自身を含む): 23208768

約数和(自身を除く): 4669103

約数列:

[1, 5, 43, 53, 215, 265, 1627, 2279, 8135, 11395, 69961, 86231, 349805, 431155, 3707933, 18539665]

約数ペア:

[(1, 18539665), (5, 3707933), (43, 431155), (53, 349805), (215, 86231), (265, 69961), (1627, 11395), (2279, 8135)]