209190915

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{108109}}^1$

素因数の和:108163

約数の個数: 24

約数和(自身を含む): 371033520

約数和(自身を除く): 161842605

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 108109, 324327, 540545, 972981, 1621635, 4648687, 4864905, 13946061, 23243435, 41838183, 69730305, 209190915]

約数ペア:

[(1, 209190915), (3, 69730305), (5, 41838183), (9, 23243435), (15, 13946061), (43, 4864905), (45, 4648687), (129, 1621635), (215, 972981), (387, 540545), (645, 324327), (1935, 108109)]