20721344

素因数分解:

$2^6\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2011}}^1$

素因数の和:2053

約数の個数: 56

約数和(自身を含む): 49060608

約数和(自身を除く): 28339264

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 161, 184, 224, 322, 368, 448, 644, 736, 1288, 1472, 2011, 2576, 4022, 5152, 8044, 10304, 14077, 16088, 28154, 32176, 46253, 56308, 64352, 92506, 112616, 128704, 185012, 225232, 323771, 370024, 450464, 647542, 740048, 900928, 1295084, 1480096, 2590168, 2960192, 5180336, 10360672, 20721344]

約数ペア:

[(1, 20721344), (2, 10360672), (4, 5180336), (7, 2960192), (8, 2590168), (14, 1480096), (16, 1295084), (23, 900928), (28, 740048), (32, 647542), (46, 450464), (56, 370024), (64, 323771), (92, 225232), (112, 185012), (161, 128704), (184, 112616), (224, 92506), (322, 64352), (368, 56308), (448, 46253), (644, 32176), (736, 28154), (1288, 16088), (1472, 14077), (2011, 10304), (2576, 8044), (4022, 5152)]