520780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2003}}^1$

素因数の和:2025

約数の個数: 24

約数和(自身を含む): 1178352

約数和(自身を除く): 657572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2003, 4006, 8012, 10015, 20030, 26039, 40060, 52078, 104156, 130195, 260390, 520780]

約数ペア:

[(1, 520780), (2, 260390), (4, 130195), (5, 104156), (10, 52078), (13, 40060), (20, 26039), (26, 20030), (52, 10015), (65, 8012), (130, 4006), (260, 2003)]