20212983

素因数分解:

$3^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:275

約数の個数: 56

約数和(自身を含む): 36829728

約数和(自身を除く): 16616745

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 233, 243, 357, 459, 567, 699, 729, 1071, 1377, 1631, 1701, 2097, 3213, 3961, 4131, 4893, 5103, 6291, 9639, 11883, 12393, 14679, 18873, 27727, 28917, 35649, 44037, 56619, 83181, 86751, 106947, 132111, 169857, 249543, 320841, 396333, 748629, 962523, 1188999, 2245887, 2887569, 6737661, 20212983]

約数ペア:

[(1, 20212983), (3, 6737661), (7, 2887569), (9, 2245887), (17, 1188999), (21, 962523), (27, 748629), (51, 396333), (63, 320841), (81, 249543), (119, 169857), (153, 132111), (189, 106947), (233, 86751), (243, 83181), (357, 56619), (459, 44037), (567, 35649), (699, 28917), (729, 27727), (1071, 18873), (1377, 14679), (1631, 12393), (1701, 11883), (2097, 9639), (3213, 6291), (3961, 5103), (4131, 4893)]