18705897

素因数分解:

$3^5\times 7^2\times {\mathrm{1571}}^1$

素因数の和:1600

約数の個数: 36

約数和(自身を含む): 32615856

約数和(自身を除く): 13909959

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 1323, 1571, 1701, 3969, 4713, 10997, 11907, 14139, 32991, 42417, 76979, 98973, 127251, 230937, 296919, 381753, 692811, 890757, 2078433, 2672271, 6235299, 18705897]

約数ペア:

[(1, 18705897), (3, 6235299), (7, 2672271), (9, 2078433), (21, 890757), (27, 692811), (49, 381753), (63, 296919), (81, 230937), (147, 127251), (189, 98973), (243, 76979), (441, 42417), (567, 32991), (1323, 14139), (1571, 11907), (1701, 10997), (3969, 4713)]