21772317

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{4003}}^1$

素因数の和:4057

約数の個数: 24

約数和(自身を含む): 34690656

約数和(自身を除く): 12918339

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 4003, 5439, 12009, 28021, 84063, 148111, 196147, 444333, 588441, 1036777, 3110331, 7257439, 21772317]

約数ペア:

[(1, 21772317), (3, 7257439), (7, 3110331), (21, 1036777), (37, 588441), (49, 444333), (111, 196147), (147, 148111), (259, 84063), (777, 28021), (1813, 12009), (4003, 5439)]