15686217

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{6247}}^1$

素因数の和:6290

約数の個数: 20

約数和(自身を含む): 24192256

約数和(自身を除く): 8506039

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 6247, 18741, 56223, 168669, 193657, 506007, 580971, 1742913, 5228739, 15686217]

約数ペア:

[(1, 15686217), (3, 5228739), (9, 1742913), (27, 580971), (31, 506007), (81, 193657), (93, 168669), (279, 56223), (837, 18741), (2511, 6247)]