81240208

素因数分解:

$2^4\times 7^1\times {\mathrm{725359}}^1$

素因数の和:725374

約数の個数: 20

約数和(自身を含む): 179889280

約数和(自身を除く): 98649072

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 725359, 1450718, 2901436, 5077513, 5802872, 10155026, 11605744, 20310052, 40620104, 81240208]

約数ペア:

[(1, 81240208), (2, 40620104), (4, 20310052), (7, 11605744), (8, 10155026), (14, 5802872), (16, 5077513), (28, 2901436), (56, 1450718), (112, 725359)]