256553385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1009}}^1$

素因数の和:1118

約数の個数: 64

約数和(自身を含む): 474716160

約数和(自身を除く): 218162775

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 67, 69, 115, 165, 201, 253, 335, 345, 737, 759, 1005, 1009, 1265, 1541, 2211, 3027, 3685, 3795, 4623, 5045, 7705, 11055, 11099, 15135, 16951, 23115, 23207, 33297, 50853, 55495, 67603, 69621, 84755, 116035, 166485, 202809, 254265, 255277, 338015, 348105, 743633, 765831, 1014045, 1276385, 1554869, 2230899, 3718165, 3829155, 4664607, 7774345, 11154495, 17103559, 23323035, 51310677, 85517795, 256553385]

約数ペア:

[(1, 256553385), (3, 85517795), (5, 51310677), (11, 23323035), (15, 17103559), (23, 11154495), (33, 7774345), (55, 4664607), (67, 3829155), (69, 3718165), (115, 2230899), (165, 1554869), (201, 1276385), (253, 1014045), (335, 765831), (345, 743633), (737, 348105), (759, 338015), (1005, 255277), (1009, 254265), (1265, 202809), (1541, 166485), (2211, 116035), (3027, 84755), (3685, 69621), (3795, 67603), (4623, 55495), (5045, 50853), (7705, 33297), (11055, 23207), (11099, 23115), (15135, 16951)]