18478978

素因数分解:

$2^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{977}}^1$

素因数の和:1186

約数の個数: 24

約数和(自身を含む): 32444172

約数和(自身を除く): 13965194

約数列:

[1, 2, 7, 14, 49, 98, 193, 386, 977, 1351, 1954, 2702, 6839, 9457, 13678, 18914, 47873, 95746, 188561, 377122, 1319927, 2639854, 9239489, 18478978]

約数ペア:

[(1, 18478978), (2, 9239489), (7, 2639854), (14, 1319927), (49, 377122), (98, 188561), (193, 95746), (386, 47873), (977, 18914), (1351, 13678), (1954, 9457), (2702, 6839)]