21547472

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31319}}^1$

素因数の和:31370

約数の個数: 20

約数和(自身を含む): 42720480

約数和(自身を除く): 21173008

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31319, 62638, 125276, 250552, 501104, 1346717, 2693434, 5386868, 10773736, 21547472]

約数ペア:

[(1, 21547472), (2, 10773736), (4, 5386868), (8, 2693434), (16, 1346717), (43, 501104), (86, 250552), (172, 125276), (344, 62638), (688, 31319)]