20509814

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{1987}}^1$

素因数の和:2399

約数の個数: 16

約数和(自身を含む): 33231408

約数和(自身を除く): 12721594

約数列:

[1, 2, 13, 26, 397, 794, 1987, 3974, 5161, 10322, 25831, 51662, 788839, 1577678, 10254907, 20509814]

約数ペア:

[(1, 20509814), (2, 10254907), (13, 1577678), (26, 788839), (397, 51662), (794, 25831), (1987, 10322), (3974, 5161)]