20896655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18911}}^1$

素因数の和:18946

約数の個数: 16

約数和(自身を含む): 28594944

約数和(自身を除く): 7698289

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18911, 94555, 245843, 321487, 1229215, 1607435, 4179331, 20896655]

約数ペア:

[(1, 20896655), (5, 4179331), (13, 1607435), (17, 1229215), (65, 321487), (85, 245843), (221, 94555), (1105, 18911)]