222999

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:95

約数の個数: 24

約数和(自身を含む): 363888

約数和(自身を除く): 140889

約数列:

[1, 3, 7, 21, 37, 41, 49, 111, 123, 147, 259, 287, 777, 861, 1517, 1813, 2009, 4551, 5439, 6027, 10619, 31857, 74333, 222999]

約数ペア:

[(1, 222999), (3, 74333), (7, 31857), (21, 10619), (37, 6027), (41, 5439), (49, 4551), (111, 2009), (123, 1813), (147, 1517), (259, 861), (287, 777)]