9980120

素因数分解:

$2^3\times 5^1\times {\mathrm{249503}}^1$

素因数の和:249514

約数の個数: 16

約数和(自身を含む): 22455360

約数和(自身を除く): 12475240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 249503, 499006, 998012, 1247515, 1996024, 2495030, 4990060, 9980120]

約数ペア:

[(1, 9980120), (2, 4990060), (4, 2495030), (5, 1996024), (8, 1247515), (10, 998012), (20, 499006), (40, 249503)]