21387798

素因数分解:

$2^1\times 3^2\times {\mathrm{191}}^1\times {\mathrm{6221}}^1$

素因数の和:6420

約数の個数: 24

約数和(自身を含む): 46590336

約数和(自身を除く): 25202538

約数列:

[1, 2, 3, 6, 9, 18, 191, 382, 573, 1146, 1719, 3438, 6221, 12442, 18663, 37326, 55989, 111978, 1188211, 2376422, 3564633, 7129266, 10693899, 21387798]

約数ペア:

[(1, 21387798), (2, 10693899), (3, 7129266), (6, 3564633), (9, 2376422), (18, 1188211), (191, 111978), (382, 55989), (573, 37326), (1146, 18663), (1719, 12442), (3438, 6221)]