218593809

素因数分解:

$3^5\times 7^1\times {\mathrm{128509}}^1$

素因数の和:128531

約数の個数: 24

約数和(自身を含む): 374221120

約数和(自身を除く): 155627311

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 128509, 385527, 899563, 1156581, 2698689, 3469743, 8096067, 10409229, 24288201, 31227687, 72864603, 218593809]

約数ペア:

[(1, 218593809), (3, 72864603), (7, 31227687), (9, 24288201), (21, 10409229), (27, 8096067), (63, 3469743), (81, 2698689), (189, 1156581), (243, 899563), (567, 385527), (1701, 128509)]