18978824

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{55171}}^1$

素因数の和:55220

約数の個数: 16

約数和(自身を含む): 36413520

約数和(自身を除く): 17434696

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 55171, 110342, 220684, 441368, 2372353, 4744706, 9489412, 18978824]

約数ペア:

[(1, 18978824), (2, 9489412), (4, 4744706), (8, 2372353), (43, 441368), (86, 220684), (172, 110342), (344, 55171)]