20415906

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{521}}^1$

素因数の和:847

約数の個数: 48

約数和(自身を含む): 50813568

約数和(自身を除く): 30397662

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 311, 521, 622, 933, 1042, 1563, 1866, 2177, 2799, 3126, 3647, 4354, 4689, 5598, 6531, 7294, 9378, 10941, 13062, 19593, 21882, 32823, 39186, 65646, 162031, 324062, 486093, 972186, 1134217, 1458279, 2268434, 2916558, 3402651, 6805302, 10207953, 20415906]

約数ペア:

[(1, 20415906), (2, 10207953), (3, 6805302), (6, 3402651), (7, 2916558), (9, 2268434), (14, 1458279), (18, 1134217), (21, 972186), (42, 486093), (63, 324062), (126, 162031), (311, 65646), (521, 39186), (622, 32823), (933, 21882), (1042, 19593), (1563, 13062), (1866, 10941), (2177, 9378), (2799, 7294), (3126, 6531), (3647, 5598), (4354, 4689)]