80641040

素因数分解:

$2^4\times 5^1\times {\mathrm{1008013}}^1$

素因数の和:1008026

約数の個数: 20

約数和(自身を含む): 187490604

約数和(自身を除く): 106849564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1008013, 2016026, 4032052, 5040065, 8064104, 10080130, 16128208, 20160260, 40320520, 80641040]

約数ペア:

[(1, 80641040), (2, 40320520), (4, 20160260), (5, 16128208), (8, 10080130), (10, 8064104), (16, 5040065), (20, 4032052), (40, 2016026), (80, 1008013)]