28417221

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 49131264

約数和(自身を除く): 20714043

約数列:

[1, 3, 7, 9, 21, 37, 63, 73, 111, 167, 219, 259, 333, 501, 511, 657, 777, 1169, 1503, 1533, 2331, 2701, 3507, 4599, 6179, 8103, 10521, 12191, 18537, 18907, 24309, 36573, 43253, 55611, 56721, 85337, 109719, 129759, 170163, 256011, 389277, 451067, 768033, 1353201, 3157469, 4059603, 9472407, 28417221]

約数ペア:

[(1, 28417221), (3, 9472407), (7, 4059603), (9, 3157469), (21, 1353201), (37, 768033), (63, 451067), (73, 389277), (111, 256011), (167, 170163), (219, 129759), (259, 109719), (333, 85337), (501, 56721), (511, 55611), (657, 43253), (777, 36573), (1169, 24309), (1503, 18907), (1533, 18537), (2331, 12191), (2701, 10521), (3507, 8103), (4599, 6179)]