21033220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80897}}^1$

素因数の和:80919

約数の個数: 24

約数和(自身を含む): 47568024

約数和(自身を除く): 26534804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80897, 161794, 323588, 404485, 808970, 1051661, 1617940, 2103322, 4206644, 5258305, 10516610, 21033220]

約数ペア:

[(1, 21033220), (2, 10516610), (4, 5258305), (5, 4206644), (10, 2103322), (13, 1617940), (20, 1051661), (26, 808970), (52, 404485), (65, 323588), (130, 161794), (260, 80897)]