20109895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18199}}^1$

素因数の和:18234

約数の個数: 16

約数和(自身を含む): 27518400

約数和(自身を除く): 7408505

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18199, 90995, 236587, 309383, 1182935, 1546915, 4021979, 20109895]

約数ペア:

[(1, 20109895), (5, 4021979), (13, 1546915), (17, 1182935), (65, 309383), (85, 236587), (221, 90995), (1105, 18199)]