21387438

素因数分解:

$2^1\times 3^2\times {\mathrm{929}}^1\times {\mathrm{1279}}^1$

素因数の和:2216

約数の個数: 24

約数和(自身を含む): 46425600

約数和(自身を除く): 25038162

約数列:

[1, 2, 3, 6, 9, 18, 929, 1279, 1858, 2558, 2787, 3837, 5574, 7674, 8361, 11511, 16722, 23022, 1188191, 2376382, 3564573, 7129146, 10693719, 21387438]

約数ペア:

[(1, 21387438), (2, 10693719), (3, 7129146), (6, 3564573), (9, 2376382), (18, 1188191), (929, 23022), (1279, 16722), (1858, 11511), (2558, 8361), (2787, 7674), (3837, 5574)]