208906209

素因数分解:

$3^4\times {\mathrm{1019}}^1\times {\mathrm{2531}}^1$

素因数の和:3562

約数の個数: 20

約数和(自身を含む): 312499440

約数和(自身を除く): 103593231

約数列:

[1, 3, 9, 27, 81, 1019, 2531, 3057, 7593, 9171, 22779, 27513, 68337, 82539, 205011, 2579089, 7737267, 23211801, 69635403, 208906209]

約数ペア:

[(1, 208906209), (3, 69635403), (9, 23211801), (27, 7737267), (81, 2579089), (1019, 205011), (2531, 82539), (3057, 68337), (7593, 27513), (9171, 22779)]