20419295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1087}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 28057344

約数和(自身を除く): 7638049

約数列:

[1, 5, 13, 17, 65, 85, 221, 289, 1087, 1105, 1445, 3757, 5435, 14131, 18479, 18785, 70655, 92395, 240227, 314143, 1201135, 1570715, 4083859, 20419295]

約数ペア:

[(1, 20419295), (5, 4083859), (13, 1570715), (17, 1201135), (65, 314143), (85, 240227), (221, 92395), (289, 70655), (1087, 18785), (1105, 18479), (1445, 14131), (3757, 5435)]