20978433

素因数分解:

$3^6\times 7^1\times {\mathrm{4111}}^1$

素因数の和:4136

約数の個数: 28

約数和(自身を含む): 35955328

約数和(自身を除く): 14976895

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4111, 5103, 12333, 28777, 36999, 86331, 110997, 258993, 332991, 776979, 998973, 2330937, 2996919, 6992811, 20978433]

約数ペア:

[(1, 20978433), (3, 6992811), (7, 2996919), (9, 2330937), (21, 998973), (27, 776979), (63, 332991), (81, 258993), (189, 110997), (243, 86331), (567, 36999), (729, 28777), (1701, 12333), (4111, 5103)]