19909099

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3989}}^1$

素因数の和:4050

約数の個数: 16

約数和(自身を含む): 24514560

約数和(自身を除く): 4605461

約数列:

[1, 7, 23, 31, 161, 217, 713, 3989, 4991, 27923, 91747, 123659, 642229, 865613, 2844157, 19909099]

約数ペア:

[(1, 19909099), (7, 2844157), (23, 865613), (31, 642229), (161, 123659), (217, 91747), (713, 27923), (3989, 4991)]