206777991

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{4523}}^1$

素因数の和:4851

約数の個数: 24

約数和(自身を含む): 321819264

約数和(自身を除く): 115041273

約数列:

[1, 3, 7, 21, 49, 147, 311, 933, 2177, 4523, 6531, 13569, 15239, 31661, 45717, 94983, 221627, 664881, 1406653, 4219959, 9846571, 29539713, 68925997, 206777991]

約数ペア:

[(1, 206777991), (3, 68925997), (7, 29539713), (21, 9846571), (49, 4219959), (147, 1406653), (311, 664881), (933, 221627), (2177, 94983), (4523, 45717), (6531, 31661), (13569, 15239)]