257011755

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17117}}^1$

素因数の和:17156

約数の個数: 64

約数和(自身を含む): 552158208

約数和(自身を除く): 295146453

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 143, 165, 195, 231, 273, 385, 429, 455, 715, 1001, 1155, 1365, 2145, 3003, 5005, 15015, 17117, 51351, 85585, 119819, 188287, 222521, 256755, 359457, 564861, 599095, 667563, 941435, 1112605, 1318009, 1557647, 1797285, 2447731, 2824305, 3337815, 3954027, 4672941, 6590045, 7343193, 7788235, 12238655, 17134117, 19770135, 23364705, 36715965, 51402351, 85670585, 257011755]

約数ペア:

[(1, 257011755), (3, 85670585), (5, 51402351), (7, 36715965), (11, 23364705), (13, 19770135), (15, 17134117), (21, 12238655), (33, 7788235), (35, 7343193), (39, 6590045), (55, 4672941), (65, 3954027), (77, 3337815), (91, 2824305), (105, 2447731), (143, 1797285), (165, 1557647), (195, 1318009), (231, 1112605), (273, 941435), (385, 667563), (429, 599095), (455, 564861), (715, 359457), (1001, 256755), (1155, 222521), (1365, 188287), (2145, 119819), (3003, 85585), (5005, 51351), (15015, 17117)]