4006989

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:247

約数の個数: 40

約数和(自身を含む): 7062528

約数和(自身を除く): 3055539

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 191, 259, 333, 567, 573, 777, 999, 1337, 1719, 2331, 2997, 4011, 5157, 6993, 7067, 12033, 15471, 20979, 21201, 36099, 49469, 63603, 108297, 148407, 190809, 445221, 572427, 1335663, 4006989]

約数ペア:

[(1, 4006989), (3, 1335663), (7, 572427), (9, 445221), (21, 190809), (27, 148407), (37, 108297), (63, 63603), (81, 49469), (111, 36099), (189, 21201), (191, 20979), (259, 15471), (333, 12033), (567, 7067), (573, 6993), (777, 5157), (999, 4011), (1337, 2997), (1719, 2331)]