2181001040

素因数分解:

$2^4\times 5^1\times {\mathrm{27262513}}^1$

素因数の和:27262526

約数の個数: 20

約数和(自身を含む): 5070827604

約数和(自身を除く): 2889826564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 27262513, 54525026, 109050052, 136312565, 218100104, 272625130, 436200208, 545250260, 1090500520, 2181001040]

約数ペア:

[(1, 2181001040), (2, 1090500520), (4, 545250260), (5, 436200208), (8, 272625130), (10, 218100104), (16, 136312565), (20, 109050052), (40, 54525026), (80, 27262513)]