18666220

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{3001}}^1$

素因数の和:3321

約数の個数: 24

約数和(自身を含む): 39338208

約数和(自身を除く): 20671988

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3001, 3110, 6002, 6220, 12004, 15005, 30010, 60020, 933311, 1866622, 3733244, 4666555, 9333110, 18666220]

約数ペア:

[(1, 18666220), (2, 9333110), (4, 4666555), (5, 3733244), (10, 1866622), (20, 933311), (311, 60020), (622, 30010), (1244, 15005), (1555, 12004), (3001, 6220), (3110, 6002)]