216958581

素因数分解:

$3^4\times 7^1\times {\mathrm{382643}}^1$

素因数の和:382662

約数の個数: 20

約数和(自身を含む): 370399392

約数和(自身を除く): 153440811

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 382643, 1147929, 2678501, 3443787, 8035503, 10331361, 24106509, 30994083, 72319527, 216958581]

約数ペア:

[(1, 216958581), (3, 72319527), (7, 30994083), (9, 24106509), (21, 10331361), (27, 8035503), (63, 3443787), (81, 2678501), (189, 1147929), (567, 382643)]