20666912

素因数分解:

$2^5\times 7^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:633

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26144608

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 257, 359, 514, 718, 1028, 1436, 1799, 2056, 2513, 2872, 3598, 4112, 5026, 5744, 7196, 8224, 10052, 11488, 14392, 20104, 28784, 40208, 57568, 80416, 92263, 184526, 369052, 645841, 738104, 1291682, 1476208, 2583364, 2952416, 5166728, 10333456, 20666912]

約数ペア:

[(1, 20666912), (2, 10333456), (4, 5166728), (7, 2952416), (8, 2583364), (14, 1476208), (16, 1291682), (28, 738104), (32, 645841), (56, 369052), (112, 184526), (224, 92263), (257, 80416), (359, 57568), (514, 40208), (718, 28784), (1028, 20104), (1436, 14392), (1799, 11488), (2056, 10052), (2513, 8224), (2872, 7196), (3598, 5744), (4112, 5026)]