81722725

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{16103}}^1$

素因数の和:16149

約数の個数: 24

約数和(自身を含む): 119813760

約数和(自身を除く): 38091035

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 5075, 16103, 80515, 112721, 402575, 466987, 563605, 2334935, 2818025, 3268909, 11674675, 16344545, 81722725]

約数ペア:

[(1, 81722725), (5, 16344545), (7, 11674675), (25, 3268909), (29, 2818025), (35, 2334935), (145, 563605), (175, 466987), (203, 402575), (725, 112721), (1015, 80515), (5075, 16103)]