161018263

素因数分解:

$7^4\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:564

約数の個数: 20

約数和(自身を含む): 189347600

約数和(自身を除く): 28329337

約数列:

[1, 7, 49, 199, 337, 343, 1393, 2359, 2401, 9751, 16513, 67063, 68257, 115591, 469441, 477799, 809137, 3286087, 23002609, 161018263]

約数ペア:

[(1, 161018263), (7, 23002609), (49, 3286087), (199, 809137), (337, 477799), (343, 469441), (1393, 115591), (2359, 68257), (2401, 67063), (9751, 16513)]