21075025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 27732600

約数和(自身を除く): 6657575

約数列:

[1, 5, 25, 29, 41, 145, 205, 709, 725, 1025, 1189, 3545, 5945, 17725, 20561, 29069, 29725, 102805, 145345, 514025, 726725, 843001, 4215005, 21075025]

約数ペア:

[(1, 21075025), (5, 4215005), (25, 843001), (29, 726725), (41, 514025), (145, 145345), (205, 102805), (709, 29725), (725, 29069), (1025, 20561), (1189, 17725), (3545, 5945)]