21566919

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 12906681

約数列:

[1, 3, 11, 19, 33, 53, 57, 59, 121, 159, 177, 209, 363, 583, 627, 649, 1007, 1121, 1749, 1947, 2299, 3021, 3127, 3363, 6413, 6897, 7139, 9381, 11077, 12331, 19239, 21417, 33231, 34397, 36993, 59413, 103191, 121847, 135641, 178239, 365541, 378367, 406923, 653543, 1135101, 1960629, 7188973, 21566919]

約数ペア:

[(1, 21566919), (3, 7188973), (11, 1960629), (19, 1135101), (33, 653543), (53, 406923), (57, 378367), (59, 365541), (121, 178239), (159, 135641), (177, 121847), (209, 103191), (363, 59413), (583, 36993), (627, 34397), (649, 33231), (1007, 21417), (1121, 19239), (1749, 12331), (1947, 11077), (2299, 9381), (3021, 7139), (3127, 6897), (3363, 6413)]