20392040

素因数分解:

$2^3\times 5^1\times {\mathrm{509801}}^1$

素因数の和:509812

約数の個数: 16

約数和(自身を含む): 45882180

約数和(自身を除く): 25490140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509801, 1019602, 2039204, 2549005, 4078408, 5098010, 10196020, 20392040]

約数ペア:

[(1, 20392040), (2, 10196020), (4, 5098010), (5, 4078408), (8, 2549005), (10, 2039204), (20, 1019602), (40, 509801)]