21220437161

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{189149}}^1$

素因数の和:189245

約数の個数: 32

約数和(自身を含む): 27891302400

約数和(自身を除く): 6670865239

約数列:

[1, 7, 11, 31, 47, 77, 217, 329, 341, 517, 1457, 2387, 3619, 10199, 16027, 112189, 189149, 1324043, 2080639, 5863619, 8890003, 14564473, 41045333, 62230021, 64499809, 97790033, 275590093, 451498663, 684530231, 1929130651, 3031491023, 21220437161]

約数ペア:

[(1, 21220437161), (7, 3031491023), (11, 1929130651), (31, 684530231), (47, 451498663), (77, 275590093), (217, 97790033), (329, 64499809), (341, 62230021), (517, 41045333), (1457, 14564473), (2387, 8890003), (3619, 5863619), (10199, 2080639), (16027, 1324043), (112189, 189149)]