257311439

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 352720896

約数和(自身を除く): 95409457

約数列:

[1, 7, 11, 17, 31, 77, 119, 187, 217, 289, 341, 373, 527, 1309, 2023, 2387, 2611, 3179, 3689, 4103, 5797, 6341, 8959, 11563, 22253, 28721, 40579, 44387, 62713, 69751, 80941, 98549, 107797, 127193, 196571, 488257, 689843, 754579, 890351, 1185767, 1375997, 2162281, 3341707, 8300369, 15135967, 23391949, 36758777, 257311439]

約数ペア:

[(1, 257311439), (7, 36758777), (11, 23391949), (17, 15135967), (31, 8300369), (77, 3341707), (119, 2162281), (187, 1375997), (217, 1185767), (289, 890351), (341, 754579), (373, 689843), (527, 488257), (1309, 196571), (2023, 127193), (2387, 107797), (2611, 98549), (3179, 80941), (3689, 69751), (4103, 62713), (5797, 44387), (6341, 40579), (8959, 28721), (11563, 22253)]