221519081

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 279552000

約数和(自身を除く): 58032919

約数列:

[1, 7, 19, 29, 79, 133, 203, 551, 553, 727, 1501, 2291, 3857, 5089, 10507, 13813, 16037, 21083, 43529, 57433, 96691, 147581, 304703, 400577, 402031, 1091227, 1665557, 2804039, 7638589, 11658899, 31645583, 221519081]

約数ペア:

[(1, 221519081), (7, 31645583), (19, 11658899), (29, 7638589), (79, 2804039), (133, 1665557), (203, 1091227), (551, 402031), (553, 400577), (727, 304703), (1501, 147581), (2291, 96691), (3857, 57433), (5089, 43529), (10507, 21083), (13813, 16037)]