19874907

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:284

約数の個数: 36

約数和(自身を含む): 31688280

約数和(自身を除く): 11813373

約数列:

[1, 3, 9, 13, 39, 73, 117, 169, 179, 219, 507, 537, 657, 949, 1521, 1611, 2327, 2847, 6981, 8541, 12337, 13067, 20943, 30251, 37011, 39201, 90753, 111033, 117603, 169871, 272259, 509613, 1528839, 2208323, 6624969, 19874907]

約数ペア:

[(1, 19874907), (3, 6624969), (9, 2208323), (13, 1528839), (39, 509613), (73, 272259), (117, 169871), (169, 117603), (179, 111033), (219, 90753), (507, 39201), (537, 37011), (657, 30251), (949, 20943), (1521, 13067), (1611, 12337), (2327, 8541), (2847, 6981)]