256516995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1097}}^1$

素因数の和:1260

約数の個数: 64

約数和(自身を含む): 500898816

約数和(自身を除く): 244381821

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 131, 255, 357, 393, 595, 655, 917, 1097, 1785, 1965, 2227, 2751, 3291, 4585, 5485, 6681, 7679, 11135, 13755, 15589, 16455, 18649, 23037, 33405, 38395, 46767, 55947, 77945, 93245, 115185, 130543, 143707, 233835, 279735, 391629, 431121, 652715, 718535, 1005949, 1958145, 2155605, 2443019, 3017847, 5029745, 7329057, 12215095, 15089235, 17101133, 36645285, 51303399, 85505665, 256516995]

約数ペア:

[(1, 256516995), (3, 85505665), (5, 51303399), (7, 36645285), (15, 17101133), (17, 15089235), (21, 12215095), (35, 7329057), (51, 5029745), (85, 3017847), (105, 2443019), (119, 2155605), (131, 1958145), (255, 1005949), (357, 718535), (393, 652715), (595, 431121), (655, 391629), (917, 279735), (1097, 233835), (1785, 143707), (1965, 130543), (2227, 115185), (2751, 93245), (3291, 77945), (4585, 55947), (5485, 46767), (6681, 38395), (7679, 33405), (11135, 23037), (13755, 18649), (15589, 16455)]