20720854

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{683}}^1$

素因数の和:900

約数の個数: 32

約数和(自身を含む): 39004416

約数和(自身を除く): 18283562

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 197, 394, 683, 1366, 1379, 2167, 2758, 4334, 4781, 7513, 9562, 15026, 15169, 30338, 52591, 105182, 134551, 269102, 941857, 1480061, 1883714, 2960122, 10360427, 20720854]

約数ペア:

[(1, 20720854), (2, 10360427), (7, 2960122), (11, 1883714), (14, 1480061), (22, 941857), (77, 269102), (154, 134551), (197, 105182), (394, 52591), (683, 30338), (1366, 15169), (1379, 15026), (2167, 9562), (2758, 7513), (4334, 4781)]