20339905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{883}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 25968384

約数和(自身を除く): 5628479

約数列:

[1, 5, 17, 85, 271, 883, 1355, 4415, 4607, 15011, 23035, 75055, 239293, 1196465, 4067981, 20339905]

約数ペア:

[(1, 20339905), (5, 4067981), (17, 1196465), (85, 239293), (271, 75055), (883, 23035), (1355, 15011), (4415, 4607)]