21078896

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{18047}}^1$

素因数の和:18128

約数の個数: 20

約数和(自身を含む): 41402112

約数和(自身を除く): 20323216

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 18047, 36094, 72188, 144376, 288752, 1317431, 2634862, 5269724, 10539448, 21078896]

約数ペア:

[(1, 21078896), (2, 10539448), (4, 5269724), (8, 2634862), (16, 1317431), (73, 288752), (146, 144376), (292, 72188), (584, 36094), (1168, 18047)]