21054681

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13217}}^1$

素因数の和:13285

約数の個数: 16

約数和(自身を含む): 31723200

約数和(自身を除く): 10668519

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13217, 39651, 118953, 356859, 779803, 2339409, 7018227, 21054681]

約数ペア:

[(1, 21054681), (3, 7018227), (9, 2339409), (27, 779803), (59, 356859), (177, 118953), (531, 39651), (1593, 13217)]