212857209

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{4733}}^1$

素因数の和:5021

約数の個数: 24

約数和(自身を含む): 324941760

約数和(自身を除く): 112084551

約数列:

[1, 3, 9, 19, 57, 171, 263, 789, 2367, 4733, 4997, 14199, 14991, 42597, 44973, 89927, 269781, 809343, 1244779, 3734337, 11203011, 23650801, 70952403, 212857209]

約数ペア:

[(1, 212857209), (3, 70952403), (9, 23650801), (19, 11203011), (57, 3734337), (171, 1244779), (263, 809343), (789, 269781), (2367, 89927), (4733, 44973), (4997, 42597), (14199, 14991)]