138638125

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{7649}}^1$

素因数の和:7698

約数の個数: 20

約数和(自身を含む): 179239500

約数和(自身を除く): 40601375

約数列:

[1, 5, 25, 29, 125, 145, 625, 725, 3625, 7649, 18125, 38245, 191225, 221821, 956125, 1109105, 4780625, 5545525, 27727625, 138638125]

約数ペア:

[(1, 138638125), (5, 27727625), (25, 5545525), (29, 4780625), (125, 1109105), (145, 956125), (625, 221821), (725, 191225), (3625, 38245), (7649, 18125)]