209910020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{96289}}^1$

素因数の和:96407

約数の個数: 24

約数和(自身を含む): 444859800

約数和(自身を除く): 234949780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 96289, 192578, 385156, 481445, 962890, 1925780, 10495501, 20991002, 41982004, 52477505, 104955010, 209910020]

約数ペア:

[(1, 209910020), (2, 104955010), (4, 52477505), (5, 41982004), (10, 20991002), (20, 10495501), (109, 1925780), (218, 962890), (436, 481445), (545, 385156), (1090, 192578), (2180, 96289)]