21255040

素因数分解:

$2^7\times 5^1\times {\mathrm{33211}}^1$

素因数の和:33230

約数の個数: 32

約数和(自身を含む): 50814360

約数和(自身を除く): 29559320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33211, 66422, 132844, 166055, 265688, 332110, 531376, 664220, 1062752, 1328440, 2125504, 2656880, 4251008, 5313760, 10627520, 21255040]

約数ペア:

[(1, 21255040), (2, 10627520), (4, 5313760), (5, 4251008), (8, 2656880), (10, 2125504), (16, 1328440), (20, 1062752), (32, 664220), (40, 531376), (64, 332110), (80, 265688), (128, 166055), (160, 132844), (320, 66422), (640, 33211)]