18215755

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{223}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 24022656

約数和(自身を除く): 5806901

約数列:

[1, 5, 17, 31, 85, 155, 223, 527, 961, 1115, 2635, 3791, 4805, 6913, 16337, 18955, 34565, 81685, 117521, 214303, 587605, 1071515, 3643151, 18215755]

約数ペア:

[(1, 18215755), (5, 3643151), (17, 1071515), (31, 587605), (85, 214303), (155, 117521), (223, 81685), (527, 34565), (961, 18955), (1115, 16337), (2635, 6913), (3791, 4805)]