128412725

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{25303}}^1$

素因数の和:25349

約数の個数: 24

約数和(自身を含む): 188261760

約数和(自身を除く): 59849035

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 5075, 25303, 126515, 177121, 632575, 733787, 885605, 3668935, 4428025, 5136509, 18344675, 25682545, 128412725]

約数ペア:

[(1, 128412725), (5, 25682545), (7, 18344675), (25, 5136509), (29, 4428025), (35, 3668935), (145, 885605), (175, 733787), (203, 632575), (725, 177121), (1015, 126515), (5075, 25303)]