216621315

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{111949}}^1$

素因数の和:112003

約数の個数: 24

約数和(自身を含む): 384212400

約数和(自身を除く): 167591085

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 111949, 335847, 559745, 1007541, 1679235, 4813807, 5037705, 14441421, 24069035, 43324263, 72207105, 216621315]

約数ペア:

[(1, 216621315), (3, 72207105), (5, 43324263), (9, 24069035), (15, 14441421), (43, 5037705), (45, 4813807), (129, 1679235), (215, 1007541), (387, 559745), (645, 335847), (1935, 111949)]