18399563

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 24192000

約数和(自身を除く): 5792437

約数列:

[1, 7, 13, 23, 59, 91, 149, 161, 299, 413, 767, 1043, 1357, 1937, 2093, 3427, 5369, 8791, 9499, 13559, 17641, 23989, 44551, 61537, 114283, 123487, 202193, 311857, 799981, 1415351, 2628509, 18399563]

約数ペア:

[(1, 18399563), (7, 2628509), (13, 1415351), (23, 799981), (59, 311857), (91, 202193), (149, 123487), (161, 114283), (299, 61537), (413, 44551), (767, 23989), (1043, 17641), (1357, 13559), (1937, 9499), (2093, 8791), (3427, 5369)]