209611905

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{128203}}^1$

素因数の和:128320

約数の個数: 16

約数和(自身を含む): 338458560

約数和(自身を除く): 128846655

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 128203, 384609, 641015, 1923045, 13974127, 41922381, 69870635, 209611905]

約数ペア:

[(1, 209611905), (3, 69870635), (5, 41922381), (15, 13974127), (109, 1923045), (327, 641015), (545, 384609), (1635, 128203)]