20425855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1019}}^1$

素因数の和:1254

約数の個数: 16

約数和(自身を含む): 25948800

約数和(自身を除く): 5522945

約数列:

[1, 5, 19, 95, 211, 1019, 1055, 4009, 5095, 19361, 20045, 96805, 215009, 1075045, 4085171, 20425855]

約数ペア:

[(1, 20425855), (5, 4085171), (19, 1075045), (95, 215009), (211, 96805), (1019, 20045), (1055, 19361), (4009, 5095)]