20425401

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 30476160

約数和(自身を除く): 10050759

約数列:

[1, 3, 9, 47, 109, 141, 327, 423, 443, 981, 1329, 3987, 5123, 15369, 20821, 46107, 48287, 62463, 144861, 187389, 434583, 2269489, 6808467, 20425401]

約数ペア:

[(1, 20425401), (3, 6808467), (9, 2269489), (47, 434583), (109, 187389), (141, 144861), (327, 62463), (423, 48287), (443, 46107), (981, 20821), (1329, 15369), (3987, 5123)]