21090675

素因数分解:

$3^1\times 5^2\times {\mathrm{179}}^1\times {\mathrm{1571}}^1$

素因数の和:1763

約数の個数: 24

約数和(自身を含む): 35087040

約数和(自身を除く): 13996365

約数列:

[1, 3, 5, 15, 25, 75, 179, 537, 895, 1571, 2685, 4475, 4713, 7855, 13425, 23565, 39275, 117825, 281209, 843627, 1406045, 4218135, 7030225, 21090675]

約数ペア:

[(1, 21090675), (3, 7030225), (5, 4218135), (15, 1406045), (25, 843627), (75, 281209), (179, 117825), (537, 39275), (895, 23565), (1571, 13425), (2685, 7855), (4475, 4713)]