21407260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152909}}^1$

素因数の和:152925

約数の個数: 24

約数和(自身を含む): 51377760

約数和(自身を除く): 29970500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152909, 305818, 611636, 764545, 1070363, 1529090, 2140726, 3058180, 4281452, 5351815, 10703630, 21407260]

約数ペア:

[(1, 21407260), (2, 10703630), (4, 5351815), (5, 4281452), (7, 3058180), (10, 2140726), (14, 1529090), (20, 1070363), (28, 764545), (35, 611636), (70, 305818), (140, 152909)]