19893643

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 6648437

約数列:

[1, 7, 11, 23, 47, 77, 161, 239, 253, 329, 517, 1081, 1673, 1771, 2629, 3619, 5497, 7567, 11233, 11891, 18403, 38479, 60467, 78631, 83237, 123563, 258359, 423269, 864941, 1808513, 2841949, 19893643]

約数ペア:

[(1, 19893643), (7, 2841949), (11, 1808513), (23, 864941), (47, 423269), (77, 258359), (161, 123563), (239, 83237), (253, 78631), (329, 60467), (517, 38479), (1081, 18403), (1673, 11891), (1771, 11233), (2629, 7567), (3619, 5497)]