1279040080

素因数分解:

$2^4\times 5^1\times {\mathrm{15988001}}^1$

素因数の和:15988014

約数の個数: 20

約数和(自身を含む): 2973768372

約数和(自身を除く): 1694728292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15988001, 31976002, 63952004, 79940005, 127904008, 159880010, 255808016, 319760020, 639520040, 1279040080]

約数ペア:

[(1, 1279040080), (2, 639520040), (4, 319760020), (5, 255808016), (8, 159880010), (10, 127904008), (16, 79940005), (20, 63952004), (40, 31976002), (80, 15988001)]