21132605

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 27867240

約数和(自身を除く): 6734635

約数列:

[1, 5, 13, 65, 89, 169, 281, 445, 845, 1157, 1405, 3653, 5785, 15041, 18265, 25009, 47489, 75205, 125045, 237445, 325117, 1625585, 4226521, 21132605]

約数ペア:

[(1, 21132605), (5, 4226521), (13, 1625585), (65, 325117), (89, 237445), (169, 125045), (281, 75205), (445, 47489), (845, 25009), (1157, 18265), (1405, 15041), (3653, 5785)]