18197217

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7247}}^1$

素因数の和:7290

約数の個数: 20

約数和(自身を含む): 28064256

約数和(自身を除く): 9867039

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7247, 21741, 65223, 195669, 224657, 587007, 673971, 2021913, 6065739, 18197217]

約数ペア:

[(1, 18197217), (3, 6065739), (9, 2021913), (27, 673971), (31, 587007), (81, 224657), (93, 195669), (279, 65223), (837, 21741), (2511, 7247)]