19918175

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2207}}^1$

素因数の和:2255

約数の個数: 18

約数和(自身を含む): 26078688

約数和(自身を除く): 6160513

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2207, 9025, 11035, 41933, 55175, 209665, 796727, 1048325, 3983635, 19918175]

約数ペア:

[(1, 19918175), (5, 3983635), (19, 1048325), (25, 796727), (95, 209665), (361, 55175), (475, 41933), (1805, 11035), (2207, 9025)]