21138540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{352309}}^1$

素因数の和:352321

約数の個数: 24

約数和(自身を含む): 59188080

約数和(自身を除く): 38049540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 352309, 704618, 1056927, 1409236, 1761545, 2113854, 3523090, 4227708, 5284635, 7046180, 10569270, 21138540]

約数ペア:

[(1, 21138540), (2, 10569270), (3, 7046180), (4, 5284635), (5, 4227708), (6, 3523090), (10, 2113854), (12, 1761545), (15, 1409236), (20, 1056927), (30, 704618), (60, 352309)]