20187399728

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{332117}}^1$

素因数の和:332285

約数の個数: 40

約数和(自身を含む): 40770805680

約数和(自身を除く): 20583405952

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 131, 232, 262, 464, 524, 1048, 2096, 3799, 7598, 15196, 30392, 60784, 332117, 664234, 1328468, 2656936, 5313872, 9631393, 19262786, 38525572, 43507327, 77051144, 87014654, 154102288, 174029308, 348058616, 696117232, 1261712483, 2523424966, 5046849932, 10093699864, 20187399728]

約数ペア:

[(1, 20187399728), (2, 10093699864), (4, 5046849932), (8, 2523424966), (16, 1261712483), (29, 696117232), (58, 348058616), (116, 174029308), (131, 154102288), (232, 87014654), (262, 77051144), (464, 43507327), (524, 38525572), (1048, 19262786), (2096, 9631393), (3799, 5313872), (7598, 2656936), (15196, 1328468), (30392, 664234), (60784, 332117)]