20379515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18443}}^1$

素因数の和:18478

約数の個数: 16

約数和(自身を含む): 27887328

約数和(自身を除く): 7507813

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18443, 92215, 239759, 313531, 1198795, 1567655, 4075903, 20379515]

約数ペア:

[(1, 20379515), (5, 4075903), (13, 1567655), (17, 1198795), (65, 313531), (85, 239759), (221, 92215), (1105, 18443)]