217656486

素因数分解:

$2^1\times 3^2\times {\mathrm{139}}^1\times {\mathrm{86993}}^1$

素因数の和:87140

約数の個数: 24

約数和(自身を含む): 474987240

約数和(自身を除く): 257330754

約数列:

[1, 2, 3, 6, 9, 18, 139, 278, 417, 834, 1251, 2502, 86993, 173986, 260979, 521958, 782937, 1565874, 12092027, 24184054, 36276081, 72552162, 108828243, 217656486]

約数ペア:

[(1, 217656486), (2, 108828243), (3, 72552162), (6, 36276081), (9, 24184054), (18, 12092027), (139, 1565874), (278, 782937), (417, 521958), (834, 260979), (1251, 173986), (2502, 86993)]