28205121040

素因数分解:

$2^4\times 5^1\times {\mathrm{352564013}}^1$

素因数の和:352564026

約数の個数: 20

約数和(自身を含む): 65576906604

約数和(自身を除く): 37371785564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352564013, 705128026, 1410256052, 1762820065, 2820512104, 3525640130, 5641024208, 7051280260, 14102560520, 28205121040]

約数ペア:

[(1, 28205121040), (2, 14102560520), (4, 7051280260), (5, 5641024208), (8, 3525640130), (10, 2820512104), (16, 1762820065), (20, 1410256052), (40, 705128026), (80, 352564013)]