257812961

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{709}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 309352680

約数和(自身を除く): 51539719

約数列:

[1, 7, 41, 49, 181, 287, 709, 1267, 2009, 4963, 7421, 8869, 29069, 34741, 51947, 128329, 203483, 363629, 898303, 1424381, 5261489, 6288121, 36830423, 257812961]

約数ペア:

[(1, 257812961), (7, 36830423), (41, 6288121), (49, 5261489), (181, 1424381), (287, 898303), (709, 363629), (1267, 203483), (2009, 128329), (4963, 51947), (7421, 34741), (8869, 29069)]