209380521

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{269473}}^1$

素因数の和:269520

約数の個数: 16

約数和(自身を含む): 327680384

約数和(自身を除く): 118299863

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 269473, 808419, 1886311, 5658933, 9970501, 29911503, 69793507, 209380521]

約数ペア:

[(1, 209380521), (3, 69793507), (7, 29911503), (21, 9970501), (37, 5658933), (111, 1886311), (259, 808419), (777, 269473)]