209439395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{7309}}^1$

素因数の和:7846

約数の個数: 16

約数和(自身を含む): 274739040

約数和(自身を除く): 65299645

約数列:

[1, 5, 11, 55, 521, 2605, 5731, 7309, 28655, 36545, 80399, 401995, 3807989, 19039945, 41887879, 209439395]

約数ペア:

[(1, 209439395), (5, 41887879), (11, 19039945), (55, 3807989), (521, 401995), (2605, 80399), (5731, 36545), (7309, 28655)]