20115879

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 34115328

約数和(自身を除く): 13999449

約数列:

[1, 3, 7, 17, 21, 29, 51, 67, 87, 119, 201, 203, 357, 469, 493, 609, 841, 1139, 1407, 1479, 1943, 2523, 3417, 3451, 5829, 5887, 7973, 10353, 13601, 14297, 17661, 23919, 33031, 40803, 42891, 56347, 99093, 100079, 169041, 231217, 300237, 394429, 693651, 957899, 1183287, 2873697, 6705293, 20115879]

約数ペア:

[(1, 20115879), (3, 6705293), (7, 2873697), (17, 1183287), (21, 957899), (29, 693651), (51, 394429), (67, 300237), (87, 231217), (119, 169041), (201, 100079), (203, 99093), (357, 56347), (469, 42891), (493, 40803), (609, 33031), (841, 23919), (1139, 17661), (1407, 14297), (1479, 13601), (1943, 10353), (2523, 7973), (3417, 5887), (3451, 5829)]