21081310

素因数分解:

$2^1\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{2029}}^1$

素因数の和:3075

約数の個数: 16

約数和(自身を含む): 38001600

約数和(自身を除く): 16920290

約数列:

[1, 2, 5, 10, 1039, 2029, 2078, 4058, 5195, 10145, 10390, 20290, 2108131, 4216262, 10540655, 21081310]

約数ペア:

[(1, 21081310), (2, 10540655), (5, 4216262), (10, 2108131), (1039, 20290), (2029, 10390), (2078, 10145), (4058, 5195)]