20075840

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1459}}^1$

素因数の和:1519

約数の個数: 56

約数和(自身を含む): 48950880

約数和(自身を除く): 28875040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1459, 1720, 2752, 2918, 3440, 5836, 6880, 7295, 11672, 13760, 14590, 23344, 29180, 46688, 58360, 62737, 93376, 116720, 125474, 233440, 250948, 313685, 466880, 501896, 627370, 1003792, 1254740, 2007584, 2509480, 4015168, 5018960, 10037920, 20075840]

約数ペア:

[(1, 20075840), (2, 10037920), (4, 5018960), (5, 4015168), (8, 2509480), (10, 2007584), (16, 1254740), (20, 1003792), (32, 627370), (40, 501896), (43, 466880), (64, 313685), (80, 250948), (86, 233440), (160, 125474), (172, 116720), (215, 93376), (320, 62737), (344, 58360), (430, 46688), (688, 29180), (860, 23344), (1376, 14590), (1459, 13760), (1720, 11672), (2752, 7295), (2918, 6880), (3440, 5836)]