18783919

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 24020864

約数和(自身を除く): 5236945

約数列:

[1, 7, 11, 67, 77, 121, 331, 469, 737, 847, 2317, 3641, 5159, 8107, 22177, 25487, 40051, 56749, 155239, 243947, 280357, 1707629, 2683417, 18783919]

約数ペア:

[(1, 18783919), (7, 2683417), (11, 1707629), (67, 280357), (77, 243947), (121, 155239), (331, 56749), (469, 40051), (737, 25487), (847, 22177), (2317, 8107), (3641, 5159)]