81405005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{3691}}^1$

素因数の和:4108

約数の個数: 16

約数和(自身を含む): 106861248

約数和(自身を除く): 25456243

約数列:

[1, 5, 11, 55, 401, 2005, 3691, 4411, 18455, 22055, 40601, 203005, 1480091, 7400455, 16281001, 81405005]

約数ペア:

[(1, 81405005), (5, 16281001), (11, 7400455), (55, 1480091), (401, 203005), (2005, 40601), (3691, 22055), (4411, 18455)]