18180207

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{11813}}^1$

素因数の和:11844

約数の個数: 20

約数和(自身を含む): 28589880

約数和(自身を除く): 10409673

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 11813, 35439, 106317, 224447, 318951, 673341, 956853, 2020023, 6060069, 18180207]

約数ペア:

[(1, 18180207), (3, 6060069), (9, 2020023), (19, 956853), (27, 673341), (57, 318951), (81, 224447), (171, 106317), (513, 35439), (1539, 11813)]