18701001

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 31629312

約数和(自身を除く): 12928311

約数列:

[1, 3, 9, 11, 23, 33, 43, 69, 99, 129, 191, 207, 253, 387, 473, 573, 759, 989, 1419, 1719, 2101, 2277, 2967, 4257, 4393, 6303, 8213, 8901, 10879, 13179, 18909, 24639, 32637, 39537, 48323, 73917, 90343, 97911, 144969, 188899, 271029, 434907, 566697, 813087, 1700091, 2077889, 6233667, 18701001]

約数ペア:

[(1, 18701001), (3, 6233667), (9, 2077889), (11, 1700091), (23, 813087), (33, 566697), (43, 434907), (69, 271029), (99, 188899), (129, 144969), (191, 97911), (207, 90343), (253, 73917), (387, 48323), (473, 39537), (573, 32637), (759, 24639), (989, 18909), (1419, 13179), (1719, 10879), (2101, 8901), (2277, 8213), (2967, 6303), (4257, 4393)]