1681040

素因数分解:

$2^4\times 5^1\times {\mathrm{21013}}^1$

素因数の和:21026

約数の個数: 20

約数和(自身を含む): 3908604

約数和(自身を除く): 2227564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21013, 42026, 84052, 105065, 168104, 210130, 336208, 420260, 840520, 1681040]

約数ペア:

[(1, 1681040), (2, 840520), (4, 420260), (5, 336208), (8, 210130), (10, 168104), (16, 105065), (20, 84052), (40, 42026), (80, 21013)]