21503944

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4987}}^1$

素因数の和:5018

約数の個数: 48

約数和(自身を含む): 51176880

約数和(自身を除く): 29672936

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 4987, 9974, 19948, 34909, 39896, 54857, 69818, 109714, 139636, 219428, 244363, 279272, 383999, 438856, 488726, 767998, 977452, 1535996, 1954904, 2687993, 3071992, 5375986, 10751972, 21503944]

約数ペア:

[(1, 21503944), (2, 10751972), (4, 5375986), (7, 3071992), (8, 2687993), (11, 1954904), (14, 1535996), (22, 977452), (28, 767998), (44, 488726), (49, 438856), (56, 383999), (77, 279272), (88, 244363), (98, 219428), (154, 139636), (196, 109714), (308, 69818), (392, 54857), (539, 39896), (616, 34909), (1078, 19948), (2156, 9974), (4312, 4987)]