20409088

素因数分解:

$2^8\times 7^2\times {\mathrm{1627}}^1$

素因数の和:1657

約数の個数: 54

約数和(自身を含む): 47418756

約数和(自身を除く): 27009668

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 784, 896, 1568, 1627, 1792, 3136, 3254, 6272, 6508, 11389, 12544, 13016, 22778, 26032, 45556, 52064, 79723, 91112, 104128, 159446, 182224, 208256, 318892, 364448, 416512, 637784, 728896, 1275568, 1457792, 2551136, 2915584, 5102272, 10204544, 20409088]

約数ペア:

[(1, 20409088), (2, 10204544), (4, 5102272), (7, 2915584), (8, 2551136), (14, 1457792), (16, 1275568), (28, 728896), (32, 637784), (49, 416512), (56, 364448), (64, 318892), (98, 208256), (112, 182224), (128, 159446), (196, 104128), (224, 91112), (256, 79723), (392, 52064), (448, 45556), (784, 26032), (896, 22778), (1568, 13016), (1627, 12544), (1792, 11389), (3136, 6508), (3254, 6272)]