257295115

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{3863}}^1$

素因数の和:4059

約数の個数: 32

約数和(自身を含む): 387265536

約数和(自身を除く): 129970421

約数列:

[1, 5, 7, 11, 35, 55, 77, 173, 385, 865, 1211, 1903, 3863, 6055, 9515, 13321, 19315, 27041, 42493, 66605, 135205, 212465, 297451, 668299, 1487255, 3341495, 4678093, 7351289, 23390465, 36756445, 51459023, 257295115]

約数ペア:

[(1, 257295115), (5, 51459023), (7, 36756445), (11, 23390465), (35, 7351289), (55, 4678093), (77, 3341495), (173, 1487255), (385, 668299), (865, 297451), (1211, 212465), (1903, 135205), (3863, 66605), (6055, 42493), (9515, 27041), (13321, 19315)]