18290223

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 31676736

約数和(自身を除く): 13386513

約数列:

[1, 3, 7, 9, 21, 41, 63, 73, 97, 123, 219, 287, 291, 369, 511, 657, 679, 861, 873, 1533, 2037, 2583, 2993, 3977, 4599, 6111, 7081, 8979, 11931, 20951, 21243, 26937, 27839, 35793, 49567, 62853, 63729, 83517, 148701, 188559, 250551, 290321, 446103, 870963, 2032247, 2612889, 6096741, 18290223]

約数ペア:

[(1, 18290223), (3, 6096741), (7, 2612889), (9, 2032247), (21, 870963), (41, 446103), (63, 290321), (73, 250551), (97, 188559), (123, 148701), (219, 83517), (287, 63729), (291, 62853), (369, 49567), (511, 35793), (657, 27839), (679, 26937), (861, 21243), (873, 20951), (1533, 11931), (2037, 8979), (2583, 7081), (2993, 6111), (3977, 4599)]