21770181

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{42437}}^1$

素因数の和:42465

約数の個数: 16

約数和(自身を含む): 33950400

約数和(自身を除く): 12180219

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 42437, 127311, 381933, 806303, 1145799, 2418909, 7256727, 21770181]

約数ペア:

[(1, 21770181), (3, 7256727), (9, 2418909), (19, 1145799), (27, 806303), (57, 381933), (171, 127311), (513, 42437)]