19119925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 26060832

約数和(自身を除く): 6940907

約数列:

[1, 5, 11, 25, 55, 251, 275, 277, 1255, 1385, 2761, 3047, 6275, 6925, 13805, 15235, 69025, 69527, 76175, 347635, 764797, 1738175, 3823985, 19119925]

約数ペア:

[(1, 19119925), (5, 3823985), (11, 1738175), (25, 764797), (55, 347635), (251, 76175), (275, 69527), (277, 69025), (1255, 15235), (1385, 13805), (2761, 6925), (3047, 6275)]