20440040

素因数分解:

$2^3\times 5^1\times {\mathrm{511001}}^1$

素因数の和:511012

約数の個数: 16

約数和(自身を含む): 45990180

約数和(自身を除く): 25550140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511001, 1022002, 2044004, 2555005, 4088008, 5110010, 10220020, 20440040]

約数ペア:

[(1, 20440040), (2, 10220020), (4, 5110010), (5, 4088008), (8, 2555005), (10, 2044004), (20, 1022002), (40, 511001)]