20806668

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13441}}^1$

素因数の和:13494

約数の個数: 36

約数和(自身を含む): 53821768

約数和(自身を除く): 33015100

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13441, 26882, 40323, 53764, 80646, 120969, 161292, 241938, 483876, 577963, 1155926, 1733889, 2311852, 3467778, 5201667, 6935556, 10403334, 20806668]

約数ペア:

[(1, 20806668), (2, 10403334), (3, 6935556), (4, 5201667), (6, 3467778), (9, 2311852), (12, 1733889), (18, 1155926), (36, 577963), (43, 483876), (86, 241938), (129, 161292), (172, 120969), (258, 80646), (387, 53764), (516, 40323), (774, 26882), (1548, 13441)]