20839616

素因数分解:

$2^6\times 7^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:457

約数の個数: 56

約数和(自身を含む): 47707296

約数和(自身を除く): 26867680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 181, 224, 257, 362, 448, 514, 724, 1028, 1267, 1448, 1799, 2056, 2534, 2896, 3598, 4112, 5068, 5792, 7196, 8224, 10136, 11584, 14392, 16448, 20272, 28784, 40544, 46517, 57568, 81088, 93034, 115136, 186068, 325619, 372136, 651238, 744272, 1302476, 1488544, 2604952, 2977088, 5209904, 10419808, 20839616]

約数ペア:

[(1, 20839616), (2, 10419808), (4, 5209904), (7, 2977088), (8, 2604952), (14, 1488544), (16, 1302476), (28, 744272), (32, 651238), (56, 372136), (64, 325619), (112, 186068), (181, 115136), (224, 93034), (257, 81088), (362, 57568), (448, 46517), (514, 40544), (724, 28784), (1028, 20272), (1267, 16448), (1448, 14392), (1799, 11584), (2056, 10136), (2534, 8224), (2896, 7196), (3598, 5792), (4112, 5068)]