15980080

素因数分解:

$2^4\times 5^1\times {\mathrm{199751}}^1$

素因数の和:199764

約数の個数: 20

約数和(自身を含む): 37153872

約数和(自身を除く): 21173792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199751, 399502, 799004, 998755, 1598008, 1997510, 3196016, 3995020, 7990040, 15980080]

約数ペア:

[(1, 15980080), (2, 7990040), (4, 3995020), (5, 3196016), (8, 1997510), (10, 1598008), (16, 998755), (20, 799004), (40, 399502), (80, 199751)]