257415571

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{1693}}^1$

素因数の和:1843

約数の個数: 24

約数和(自身を含む): 312847920

約数和(自身を除く): 55432349

約数列:

[1, 7, 29, 49, 107, 203, 749, 1421, 1693, 3103, 5243, 11851, 21721, 49097, 82957, 152047, 181151, 343679, 1268057, 2405753, 5253379, 8876399, 36773653, 257415571]

約数ペア:

[(1, 257415571), (7, 36773653), (29, 8876399), (49, 5253379), (107, 2405753), (203, 1268057), (749, 343679), (1421, 181151), (1693, 152047), (3103, 82957), (5243, 49097), (11851, 21721)]