2561769

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 36

約数和(自身を含む): 4448964

約数和(自身を除く): 1887195

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 157, 259, 333, 441, 471, 777, 1099, 1413, 1813, 2331, 3297, 5439, 5809, 7693, 9891, 16317, 17427, 23079, 40663, 52281, 69237, 121989, 284641, 365967, 853923, 2561769]

約数ペア:

[(1, 2561769), (3, 853923), (7, 365967), (9, 284641), (21, 121989), (37, 69237), (49, 52281), (63, 40663), (111, 23079), (147, 17427), (157, 16317), (259, 9891), (333, 7693), (441, 5809), (471, 5439), (777, 3297), (1099, 2331), (1413, 1813)]