20325249

素因数分解:

$3^6\times 7^2\times {\mathrm{569}}^1$

素因数の和:601

約数の個数: 42

約数和(自身を含む): 35511570

約数和(自身を除く): 15186321

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 569, 729, 1323, 1701, 1707, 3969, 3983, 5103, 5121, 11907, 11949, 15363, 27881, 35721, 35847, 46089, 83643, 107541, 138267, 250929, 322623, 414801, 752787, 967869, 2258361, 2903607, 6775083, 20325249]

約数ペア:

[(1, 20325249), (3, 6775083), (7, 2903607), (9, 2258361), (21, 967869), (27, 752787), (49, 414801), (63, 322623), (81, 250929), (147, 138267), (189, 107541), (243, 83643), (441, 46089), (567, 35847), (569, 35721), (729, 27881), (1323, 15363), (1701, 11949), (1707, 11907), (3969, 5121), (3983, 5103)]