256478250

素因数分解:

$2^1\times 3^1\times 5^3\times 7^3\times {\mathrm{997}}^1$

素因数の和:1038

約数の個数: 128

約数和(自身を含む): 747302400

約数和(自身を除く): 490824150

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 49, 50, 70, 75, 98, 105, 125, 147, 150, 175, 210, 245, 250, 294, 343, 350, 375, 490, 525, 686, 735, 750, 875, 997, 1029, 1050, 1225, 1470, 1715, 1750, 1994, 2058, 2450, 2625, 2991, 3430, 3675, 4985, 5145, 5250, 5982, 6125, 6979, 7350, 8575, 9970, 10290, 12250, 13958, 14955, 17150, 18375, 20937, 24925, 25725, 29910, 34895, 36750, 41874, 42875, 48853, 49850, 51450, 69790, 74775, 85750, 97706, 104685, 124625, 128625, 146559, 149550, 174475, 209370, 244265, 249250, 257250, 293118, 341971, 348950, 373875, 488530, 523425, 683942, 732795, 747750, 872375, 1025913, 1046850, 1221325, 1465590, 1709855, 1744750, 2051826, 2442650, 2617125, 3419710, 3663975, 5129565, 5234250, 6106625, 7327950, 8549275, 10259130, 12213250, 17098550, 18319875, 25647825, 36639750, 42746375, 51295650, 85492750, 128239125, 256478250]

約数ペア:

[(1, 256478250), (2, 128239125), (3, 85492750), (5, 51295650), (6, 42746375), (7, 36639750), (10, 25647825), (14, 18319875), (15, 17098550), (21, 12213250), (25, 10259130), (30, 8549275), (35, 7327950), (42, 6106625), (49, 5234250), (50, 5129565), (70, 3663975), (75, 3419710), (98, 2617125), (105, 2442650), (125, 2051826), (147, 1744750), (150, 1709855), (175, 1465590), (210, 1221325), (245, 1046850), (250, 1025913), (294, 872375), (343, 747750), (350, 732795), (375, 683942), (490, 523425), (525, 488530), (686, 373875), (735, 348950), (750, 341971), (875, 293118), (997, 257250), (1029, 249250), (1050, 244265), (1225, 209370), (1470, 174475), (1715, 149550), (1750, 146559), (1994, 128625), (2058, 124625), (2450, 104685), (2625, 97706), (2991, 85750), (3430, 74775), (3675, 69790), (4985, 51450), (5145, 49850), (5250, 48853), (5982, 42875), (6125, 41874), (6979, 36750), (7350, 34895), (8575, 29910), (9970, 25725), (10290, 24925), (12250, 20937), (13958, 18375), (14955, 17150)]