18904798

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:624

約数の個数: 24

約数和(自身を含む): 31409280

約数和(自身を除く): 12504482

約数列:

[1, 2, 11, 22, 121, 191, 242, 382, 409, 818, 2101, 4202, 4499, 8998, 23111, 46222, 49489, 78119, 98978, 156238, 859309, 1718618, 9452399, 18904798]

約数ペア:

[(1, 18904798), (2, 9452399), (11, 1718618), (22, 859309), (121, 156238), (191, 98978), (242, 78119), (382, 49489), (409, 46222), (818, 23111), (2101, 8998), (4202, 4499)]