20180776

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^2$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 47437920

約数和(自身を除く): 27257144

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 181, 308, 362, 616, 724, 1267, 1448, 1991, 2534, 3982, 5068, 7964, 10136, 13937, 15928, 27874, 32761, 55748, 65522, 111496, 131044, 229327, 262088, 360371, 458654, 720742, 917308, 1441484, 1834616, 2522597, 2882968, 5045194, 10090388, 20180776]

約数ペア:

[(1, 20180776), (2, 10090388), (4, 5045194), (7, 2882968), (8, 2522597), (11, 1834616), (14, 1441484), (22, 917308), (28, 720742), (44, 458654), (56, 360371), (77, 262088), (88, 229327), (154, 131044), (181, 111496), (308, 65522), (362, 55748), (616, 32761), (724, 27874), (1267, 15928), (1448, 13937), (1991, 10136), (2534, 7964), (3982, 5068)]