389680975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{28289}}^1$

素因数の和:28347

約数の個数: 24

約数和(自身を含む): 526194000

約数和(自身を除く): 136513025

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 2755, 13775, 28289, 141445, 537491, 707225, 820381, 2687455, 4101905, 13437275, 15587239, 20509525, 77936195, 389680975]

約数ペア:

[(1, 389680975), (5, 77936195), (19, 20509525), (25, 15587239), (29, 13437275), (95, 4101905), (145, 2687455), (475, 820381), (551, 707225), (725, 537491), (2755, 141445), (13775, 28289)]