18425421

素因数分解:

$3^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{733}}^1$

素因数の和:775

約数の個数: 48

約数和(自身を含む): 33470400

約数和(自身を除く): 15044979

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 399, 441, 513, 733, 931, 1197, 1323, 2199, 2793, 3591, 5131, 6597, 8379, 13927, 15393, 19791, 25137, 35917, 41781, 46179, 97489, 107751, 125343, 138537, 292467, 323253, 376029, 682423, 877401, 969759, 2047269, 2632203, 6141807, 18425421]

約数ペア:

[(1, 18425421), (3, 6141807), (7, 2632203), (9, 2047269), (19, 969759), (21, 877401), (27, 682423), (49, 376029), (57, 323253), (63, 292467), (133, 138537), (147, 125343), (171, 107751), (189, 97489), (399, 46179), (441, 41781), (513, 35917), (733, 25137), (931, 19791), (1197, 15393), (1323, 13927), (2199, 8379), (2793, 6597), (3591, 5131)]