21815757

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4957}}^1$

素因数の和:5129

約数の個数: 16

約数和(自身を含む): 32524480

約数和(自身を除く): 10708723

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4957, 14871, 44613, 133839, 807991, 2423973, 7271919, 21815757]

約数ペア:

[(1, 21815757), (3, 7271919), (9, 2423973), (27, 807991), (163, 133839), (489, 44613), (1467, 14871), (4401, 4957)]