19991752

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1447}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 41181120

約数和(自身を除く): 21189368

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 157, 314, 628, 1256, 1447, 1727, 2894, 3454, 5788, 6908, 11576, 13816, 15917, 31834, 63668, 127336, 227179, 454358, 908716, 1817432, 2498969, 4997938, 9995876, 19991752]

約数ペア:

[(1, 19991752), (2, 9995876), (4, 4997938), (8, 2498969), (11, 1817432), (22, 908716), (44, 454358), (88, 227179), (157, 127336), (314, 63668), (628, 31834), (1256, 15917), (1447, 13816), (1727, 11576), (2894, 6908), (3454, 5788)]