19936985

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{3557}}^1$

素因数の和:3640

約数の個数: 16

約数和(自身を含む): 25617600

約数和(自身を除く): 5680615

約数列:

[1, 5, 19, 59, 95, 295, 1121, 3557, 5605, 17785, 67583, 209863, 337915, 1049315, 3987397, 19936985]

約数ペア:

[(1, 19936985), (5, 3987397), (19, 1049315), (59, 337915), (95, 209863), (295, 67583), (1121, 17785), (3557, 5605)]