128420475

素因数分解:

$3^1\times 5^2\times {\mathrm{1009}}^1\times {\mathrm{1697}}^1$

素因数の和:2719

約数の個数: 24

約数和(自身を含む): 212657520

約数和(自身を除く): 84237045

約数列:

[1, 3, 5, 15, 25, 75, 1009, 1697, 3027, 5045, 5091, 8485, 15135, 25225, 25455, 42425, 75675, 127275, 1712273, 5136819, 8561365, 25684095, 42806825, 128420475]

約数ペア:

[(1, 128420475), (3, 42806825), (5, 25684095), (15, 8561365), (25, 5136819), (75, 1712273), (1009, 127275), (1697, 75675), (3027, 42425), (5045, 25455), (5091, 25225), (8485, 15135)]