20013189

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 12089211

約数列:

[1, 3, 7, 21, 37, 43, 111, 129, 259, 301, 599, 777, 903, 1591, 1797, 4193, 4773, 11137, 12579, 22163, 25757, 33411, 66489, 77271, 155141, 180299, 465423, 540897, 953009, 2859027, 6671063, 20013189]

約数ペア:

[(1, 20013189), (3, 6671063), (7, 2859027), (21, 953009), (37, 540897), (43, 465423), (111, 180299), (129, 155141), (259, 77271), (301, 66489), (599, 33411), (777, 25757), (903, 22163), (1591, 12579), (1797, 11137), (4193, 4773)]