18221425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{613}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 23982840

約数和(自身を除く): 5761415

約数列:

[1, 5, 25, 29, 41, 145, 205, 613, 725, 1025, 1189, 3065, 5945, 15325, 17777, 25133, 29725, 88885, 125665, 444425, 628325, 728857, 3644285, 18221425]

約数ペア:

[(1, 18221425), (5, 3644285), (25, 728857), (29, 628325), (41, 444425), (145, 125665), (205, 88885), (613, 29725), (725, 25133), (1025, 17777), (1189, 15325), (3065, 5945)]