20025020

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2789}}^1$

素因数の和:3157

約数の個数: 24

約数和(自身を含む): 42184800

約数和(自身を除く): 22159780

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 2789, 3590, 5578, 7180, 11156, 13945, 27890, 55780, 1001251, 2002502, 4005004, 5006255, 10012510, 20025020]

約数ペア:

[(1, 20025020), (2, 10012510), (4, 5006255), (5, 4005004), (10, 2002502), (20, 1001251), (359, 55780), (718, 27890), (1436, 13945), (1795, 11156), (2789, 7180), (3590, 5578)]