12440080

素因数分解:

$2^4\times 5^1\times {\mathrm{155501}}^1$

素因数の和:155514

約数の個数: 20

約数和(自身を含む): 28923372

約数和(自身を除く): 16483292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155501, 311002, 622004, 777505, 1244008, 1555010, 2488016, 3110020, 6220040, 12440080]

約数ペア:

[(1, 12440080), (2, 6220040), (4, 3110020), (5, 2488016), (8, 1555010), (10, 1244008), (16, 777505), (20, 622004), (40, 311002), (80, 155501)]