205721721

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{401017}}^1$

素因数の和:401045

約数の個数: 16

約数和(自身を含む): 320814400

約数和(自身を除く): 115092679

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 401017, 1203051, 3609153, 7619323, 10827459, 22857969, 68573907, 205721721]

約数ペア:

[(1, 205721721), (3, 68573907), (9, 22857969), (19, 10827459), (27, 7619323), (57, 3609153), (171, 1203051), (513, 401017)]