19018285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 27280512

約数和(自身を除く): 8262227

約数列:

[1, 5, 11, 13, 55, 65, 67, 143, 335, 397, 715, 737, 871, 1985, 3685, 4355, 4367, 5161, 9581, 21835, 25805, 26599, 47905, 56771, 132995, 283855, 292589, 345787, 1462945, 1728935, 3803657, 19018285]

約数ペア:

[(1, 19018285), (5, 3803657), (11, 1728935), (13, 1462945), (55, 345787), (65, 292589), (67, 283855), (143, 132995), (335, 56771), (397, 47905), (715, 26599), (737, 25805), (871, 21835), (1985, 9581), (3685, 5161), (4355, 4367)]