12980120

素因数分解:

$2^3\times 5^1\times {\mathrm{324503}}^1$

素因数の和:324514

約数の個数: 16

約数和(自身を含む): 29205360

約数和(自身を除く): 16225240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 324503, 649006, 1298012, 1622515, 2596024, 3245030, 6490060, 12980120]

約数ペア:

[(1, 12980120), (2, 6490060), (4, 3245030), (5, 2596024), (8, 1622515), (10, 1298012), (20, 649006), (40, 324503)]