8980780

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1789}}^1$

素因数の和:2049

約数の個数: 24

約数和(自身を含む): 18945360

約数和(自身を除く): 9964580

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 1789, 2510, 3578, 5020, 7156, 8945, 17890, 35780, 449039, 898078, 1796156, 2245195, 4490390, 8980780]

約数ペア:

[(1, 8980780), (2, 4490390), (4, 2245195), (5, 1796156), (10, 898078), (20, 449039), (251, 35780), (502, 17890), (1004, 8945), (1255, 7156), (1789, 5020), (2510, 3578)]