18869776

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{27427}}^1$

素因数の和:27478

約数の個数: 20

約数和(自身を含む): 37411792

約数和(自身を除く): 18542016

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 27427, 54854, 109708, 219416, 438832, 1179361, 2358722, 4717444, 9434888, 18869776]

約数ペア:

[(1, 18869776), (2, 9434888), (4, 4717444), (8, 2358722), (16, 1179361), (43, 438832), (86, 219416), (172, 109708), (344, 54854), (688, 27427)]