257249377

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2293}}^1$

素因数の和:2389

約数の個数: 32

約数和(自身を含む): 338264064

約数和(自身を除く): 81014687

約数列:

[1, 7, 11, 31, 47, 77, 217, 329, 341, 517, 1457, 2293, 2387, 3619, 10199, 16027, 16051, 25223, 71083, 107771, 112189, 176561, 497581, 754397, 781913, 1185481, 3340901, 5473391, 8298367, 23386307, 36749911, 257249377]

約数ペア:

[(1, 257249377), (7, 36749911), (11, 23386307), (31, 8298367), (47, 5473391), (77, 3340901), (217, 1185481), (329, 781913), (341, 754397), (517, 497581), (1457, 176561), (2293, 112189), (2387, 107771), (3619, 71083), (10199, 25223), (16027, 16051)]