209507815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{971}}^1\times {\mathrm{3923}}^1$

素因数の和:4910

約数の個数: 16

約数和(自身を含む): 274617216

約数和(自身を除く): 65109401

約数列:

[1, 5, 11, 55, 971, 3923, 4855, 10681, 19615, 43153, 53405, 215765, 3809233, 19046165, 41901563, 209507815]

約数ペア:

[(1, 209507815), (5, 41901563), (11, 19046165), (55, 3809233), (971, 215765), (3923, 53405), (4855, 43153), (10681, 19615)]