21157983

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10177}}^1$

素因数の和:10204

約数の個数: 32

約数和(自身を含む): 39083520

約数和(自身を除く): 17925537

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10177, 30531, 71239, 91593, 111947, 213717, 274779, 335841, 641151, 783629, 1007523, 1923453, 2350887, 3022569, 7052661, 21157983]

約数ペア:

[(1, 21157983), (3, 7052661), (7, 3022569), (9, 2350887), (11, 1923453), (21, 1007523), (27, 783629), (33, 641151), (63, 335841), (77, 274779), (99, 213717), (189, 111947), (231, 91593), (297, 71239), (693, 30531), (2079, 10177)]