16821025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{709}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 22802360

約数和(自身を除く): 5981335

約数列:

[1, 5, 13, 25, 65, 73, 325, 365, 709, 949, 1825, 3545, 4745, 9217, 17725, 23725, 46085, 51757, 230425, 258785, 672841, 1293925, 3364205, 16821025]

約数ペア:

[(1, 16821025), (5, 3364205), (13, 1293925), (25, 672841), (65, 258785), (73, 230425), (325, 51757), (365, 46085), (709, 23725), (949, 17725), (1825, 9217), (3545, 4745)]