20482420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6361}}^1$

素因数の和:6400

約数の個数: 48

約数和(自身を含む): 51303168

約数和(自身を除く): 30820748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6361, 12722, 25444, 31805, 44527, 63610, 89054, 127220, 146303, 178108, 222635, 292606, 445270, 585212, 731515, 890540, 1024121, 1463030, 2048242, 2926060, 4096484, 5120605, 10241210, 20482420]

約数ペア:

[(1, 20482420), (2, 10241210), (4, 5120605), (5, 4096484), (7, 2926060), (10, 2048242), (14, 1463030), (20, 1024121), (23, 890540), (28, 731515), (35, 585212), (46, 445270), (70, 292606), (92, 222635), (115, 178108), (140, 146303), (161, 127220), (230, 89054), (322, 63610), (460, 44527), (644, 31805), (805, 25444), (1610, 12722), (3220, 6361)]