397362020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1806191}}^1$

素因数の和:1806211

約数の個数: 24

約数和(自身を含む): 910320768

約数和(自身を除く): 512958748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1806191, 3612382, 7224764, 9030955, 18061910, 19868101, 36123820, 39736202, 79472404, 99340505, 198681010, 397362020]

約数ペア:

[(1, 397362020), (2, 198681010), (4, 99340505), (5, 79472404), (10, 39736202), (11, 36123820), (20, 19868101), (22, 18061910), (44, 9030955), (55, 7224764), (110, 3612382), (220, 1806191)]