21093220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24527}}^1$

素因数の和:24579

約数の個数: 24

約数和(自身を含む): 45327744

約数和(自身を除く): 24234524

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24527, 49054, 98108, 122635, 245270, 490540, 1054661, 2109322, 4218644, 5273305, 10546610, 21093220]

約数ペア:

[(1, 21093220), (2, 10546610), (4, 5273305), (5, 4218644), (10, 2109322), (20, 1054661), (43, 490540), (86, 245270), (172, 122635), (215, 98108), (430, 49054), (860, 24527)]