664982690

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1621909}}^1$

素因数の和:1621957

約数の個数: 16

約数和(自身を含む): 1226163960

約数和(自身を除く): 561181270

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1621909, 3243818, 8109545, 16219090, 66498269, 132996538, 332491345, 664982690]

約数ペア:

[(1, 664982690), (2, 332491345), (5, 132996538), (10, 66498269), (41, 16219090), (82, 8109545), (205, 3243818), (410, 1621909)]