21082090

素因数分解:

$2^1\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1901}}^1$

素因数の和:3017

約数の個数: 16

約数和(自身を含む): 38001960

約数和(自身を除く): 16919870

約数列:

[1, 2, 5, 10, 1109, 1901, 2218, 3802, 5545, 9505, 11090, 19010, 2108209, 4216418, 10541045, 21082090]

約数ペア:

[(1, 21082090), (2, 10541045), (5, 4216418), (10, 2108209), (1109, 19010), (1901, 11090), (2218, 9505), (3802, 5545)]