199905279

素因数分解:

$3^1\times 7^1\times {\mathrm{1259}}^1\times {\mathrm{7561}}^1$

素因数の和:8830

約数の個数: 16

約数和(自身を含む): 304899840

約数和(自身を除く): 104994561

約数列:

[1, 3, 7, 21, 1259, 3777, 7561, 8813, 22683, 26439, 52927, 158781, 9519299, 28557897, 66635093, 199905279]

約数ペア:

[(1, 199905279), (3, 66635093), (7, 28557897), (21, 9519299), (1259, 158781), (3777, 52927), (7561, 26439), (8813, 22683)]