18987894

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{6719}}^1$

素因数の和:6884

約数の個数: 24

約数和(自身を含む): 41408640

約数和(自身を除く): 22420746

約数列:

[1, 2, 3, 6, 9, 18, 157, 314, 471, 942, 1413, 2826, 6719, 13438, 20157, 40314, 60471, 120942, 1054883, 2109766, 3164649, 6329298, 9493947, 18987894]

約数ペア:

[(1, 18987894), (2, 9493947), (3, 6329298), (6, 3164649), (9, 2109766), (18, 1054883), (157, 120942), (314, 60471), (471, 40314), (942, 20157), (1413, 13438), (2826, 6719)]