19210205

素因数分解:

$5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 27147960

約数和(自身を除く): 7937755

約数列:

[1, 5, 7, 35, 49, 89, 245, 445, 623, 881, 3115, 4361, 4405, 6167, 21805, 30835, 43169, 78409, 215845, 392045, 548863, 2744315, 3842041, 19210205]

約数ペア:

[(1, 19210205), (5, 3842041), (7, 2744315), (35, 548863), (49, 392045), (89, 215845), (245, 78409), (445, 43169), (623, 30835), (881, 21805), (3115, 6167), (4361, 4405)]