20625423

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 14767473

約数列:

[1, 3, 7, 13, 21, 39, 43, 49, 91, 129, 147, 251, 273, 301, 559, 637, 753, 903, 1677, 1757, 1911, 2107, 3263, 3913, 5271, 6321, 9789, 10793, 11739, 12299, 22841, 27391, 32379, 36897, 68523, 75551, 82173, 140309, 159887, 226653, 420927, 479661, 528857, 982163, 1586571, 2946489, 6875141, 20625423]

約数ペア:

[(1, 20625423), (3, 6875141), (7, 2946489), (13, 1586571), (21, 982163), (39, 528857), (43, 479661), (49, 420927), (91, 226653), (129, 159887), (147, 140309), (251, 82173), (273, 75551), (301, 68523), (559, 36897), (637, 32379), (753, 27391), (903, 22841), (1677, 12299), (1757, 11739), (1911, 10793), (2107, 9789), (3263, 6321), (3913, 5271)]