21605319

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{673}}^1$

素因数の和:752

約数の個数: 32

約数和(自身を含む): 33969600

約数和(自身を除く): 12364281

約数列:

[1, 3, 9, 27, 29, 41, 87, 123, 261, 369, 673, 783, 1107, 1189, 2019, 3567, 6057, 10701, 18171, 19517, 27593, 32103, 58551, 82779, 175653, 248337, 526959, 745011, 800197, 2400591, 7201773, 21605319]

約数ペア:

[(1, 21605319), (3, 7201773), (9, 2400591), (27, 800197), (29, 745011), (41, 526959), (87, 248337), (123, 175653), (261, 82779), (369, 58551), (673, 32103), (783, 27593), (1107, 19517), (1189, 18171), (2019, 10701), (3567, 6057)]