18405205

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2129}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 28627200

約数和(自身を除く): 10221995

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 2129, 8645, 10645, 14903, 27677, 40451, 74515, 138385, 193739, 202255, 283157, 525863, 968695, 1415785, 2629315, 3681041, 18405205]

約数ペア:

[(1, 18405205), (5, 3681041), (7, 2629315), (13, 1415785), (19, 968695), (35, 525863), (65, 283157), (91, 202255), (95, 193739), (133, 138385), (247, 74515), (455, 40451), (665, 27677), (1235, 14903), (1729, 10645), (2129, 8645)]