18961789

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 24276224

約数和(自身を除く): 5314435

約数列:

[1, 7, 11, 61, 77, 121, 367, 427, 671, 847, 2569, 4037, 4697, 7381, 22387, 28259, 44407, 51667, 156709, 246257, 310849, 1723799, 2708827, 18961789]

約数ペア:

[(1, 18961789), (7, 2708827), (11, 1723799), (61, 310849), (77, 246257), (121, 156709), (367, 51667), (427, 44407), (671, 28259), (847, 22387), (2569, 7381), (4037, 4697)]