21299570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{112103}}^1$

素因数の和:112129

約数の個数: 16

約数和(自身を含む): 40357440

約数和(自身を除く): 19057870

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 112103, 224206, 560515, 1121030, 2129957, 4259914, 10649785, 21299570]

約数ペア:

[(1, 21299570), (2, 10649785), (5, 4259914), (10, 2129957), (19, 1121030), (38, 560515), (95, 224206), (190, 112103)]