19957744

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{281}}^1$

素因数の和:505

約数の個数: 40

約数和(自身を含む): 40702752

約数和(自身を除く): 20745008

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 193, 281, 368, 386, 562, 772, 1124, 1544, 2248, 3088, 4439, 4496, 6463, 8878, 12926, 17756, 25852, 35512, 51704, 54233, 71024, 103408, 108466, 216932, 433864, 867728, 1247359, 2494718, 4989436, 9978872, 19957744]

約数ペア:

[(1, 19957744), (2, 9978872), (4, 4989436), (8, 2494718), (16, 1247359), (23, 867728), (46, 433864), (92, 216932), (184, 108466), (193, 103408), (281, 71024), (368, 54233), (386, 51704), (562, 35512), (772, 25852), (1124, 17756), (1544, 12926), (2248, 8878), (3088, 6463), (4439, 4496)]