220171520

素因数分解:

$2^8\times 5^1\times {\mathrm{172009}}^1$

素因数の和:172030

約数の個数: 36

約数和(自身を含む): 527382660

約数和(自身を除く): 307211140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 172009, 344018, 688036, 860045, 1376072, 1720090, 2752144, 3440180, 5504288, 6880360, 11008576, 13760720, 22017152, 27521440, 44034304, 55042880, 110085760, 220171520]

約数ペア:

[(1, 220171520), (2, 110085760), (4, 55042880), (5, 44034304), (8, 27521440), (10, 22017152), (16, 13760720), (20, 11008576), (32, 6880360), (40, 5504288), (64, 3440180), (80, 2752144), (128, 1720090), (160, 1376072), (256, 860045), (320, 688036), (640, 344018), (1280, 172009)]