18688328

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2161}}^1$

素因数の和:2237

約数の個数: 32

約数和(自身を含む): 37359360

約数和(自身を除く): 18671032

約数列:

[1, 2, 4, 8, 23, 46, 47, 92, 94, 184, 188, 376, 1081, 2161, 2162, 4322, 4324, 8644, 8648, 17288, 49703, 99406, 101567, 198812, 203134, 397624, 406268, 812536, 2336041, 4672082, 9344164, 18688328]

約数ペア:

[(1, 18688328), (2, 9344164), (4, 4672082), (8, 2336041), (23, 812536), (46, 406268), (47, 397624), (92, 203134), (94, 198812), (184, 101567), (188, 99406), (376, 49703), (1081, 17288), (2161, 8648), (2162, 8644), (4322, 4324)]