19888379

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1106

約数の個数: 16

約数和(自身を含む): 23617536

約数和(自身を除く): 3729157

約数列:

[1, 7, 47, 61, 329, 427, 991, 2867, 6937, 20069, 46577, 60451, 326039, 423157, 2841197, 19888379]

約数ペア:

[(1, 19888379), (7, 2841197), (47, 423157), (61, 326039), (329, 60451), (427, 46577), (991, 20069), (2867, 6937)]