256201920

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2281}}^1$

素因数の和:2320

約数の個数: 224

約数和(自身を含む): 973775040

約数和(自身を除く): 717573120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 192, 195, 208, 216, 234, 240, 260, 270, 288, 312, 320, 351, 360, 390, 416, 432, 468, 480, 520, 540, 576, 585, 624, 702, 720, 780, 832, 864, 936, 960, 1040, 1080, 1170, 1248, 1404, 1440, 1560, 1728, 1755, 1872, 2080, 2160, 2281, 2340, 2496, 2808, 2880, 3120, 3510, 3744, 4160, 4320, 4562, 4680, 5616, 6240, 6843, 7020, 7488, 8640, 9124, 9360, 11232, 11405, 12480, 13686, 14040, 18248, 18720, 20529, 22464, 22810, 27372, 28080, 29653, 34215, 36496, 37440, 41058, 45620, 54744, 56160, 59306, 61587, 68430, 72992, 82116, 88959, 91240, 102645, 109488, 112320, 118612, 123174, 136860, 145984, 148265, 164232, 177918, 182480, 205290, 218976, 237224, 246348, 266877, 273720, 296530, 307935, 328464, 355836, 364960, 410580, 437952, 444795, 474448, 492696, 533754, 547440, 593060, 615870, 656928, 711672, 729920, 800631, 821160, 889590, 948896, 985392, 1067508, 1094880, 1186120, 1231740, 1313856, 1334385, 1423344, 1601262, 1642320, 1779180, 1897792, 1970784, 2135016, 2189760, 2372240, 2463480, 2668770, 2846688, 3202524, 3284640, 3558360, 3941568, 4003155, 4270032, 4744480, 4926960, 5337540, 5693376, 6405048, 6569280, 7116720, 8006310, 8540064, 9488960, 9853920, 10675080, 12810096, 14233440, 16012620, 17080128, 19707840, 21350160, 25620192, 28466880, 32025240, 42700320, 51240384, 64050480, 85400640, 128100960, 256201920]

約数ペア:

[(1, 256201920), (2, 128100960), (3, 85400640), (4, 64050480), (5, 51240384), (6, 42700320), (8, 32025240), (9, 28466880), (10, 25620192), (12, 21350160), (13, 19707840), (15, 17080128), (16, 16012620), (18, 14233440), (20, 12810096), (24, 10675080), (26, 9853920), (27, 9488960), (30, 8540064), (32, 8006310), (36, 7116720), (39, 6569280), (40, 6405048), (45, 5693376), (48, 5337540), (52, 4926960), (54, 4744480), (60, 4270032), (64, 4003155), (65, 3941568), (72, 3558360), (78, 3284640), (80, 3202524), (90, 2846688), (96, 2668770), (104, 2463480), (108, 2372240), (117, 2189760), (120, 2135016), (130, 1970784), (135, 1897792), (144, 1779180), (156, 1642320), (160, 1601262), (180, 1423344), (192, 1334385), (195, 1313856), (208, 1231740), (216, 1186120), (234, 1094880), (240, 1067508), (260, 985392), (270, 948896), (288, 889590), (312, 821160), (320, 800631), (351, 729920), (360, 711672), (390, 656928), (416, 615870), (432, 593060), (468, 547440), (480, 533754), (520, 492696), (540, 474448), (576, 444795), (585, 437952), (624, 410580), (702, 364960), (720, 355836), (780, 328464), (832, 307935), (864, 296530), (936, 273720), (960, 266877), (1040, 246348), (1080, 237224), (1170, 218976), (1248, 205290), (1404, 182480), (1440, 177918), (1560, 164232), (1728, 148265), (1755, 145984), (1872, 136860), (2080, 123174), (2160, 118612), (2281, 112320), (2340, 109488), (2496, 102645), (2808, 91240), (2880, 88959), (3120, 82116), (3510, 72992), (3744, 68430), (4160, 61587), (4320, 59306), (4562, 56160), (4680, 54744), (5616, 45620), (6240, 41058), (6843, 37440), (7020, 36496), (7488, 34215), (8640, 29653), (9124, 28080), (9360, 27372), (11232, 22810), (11405, 22464), (12480, 20529), (13686, 18720), (14040, 18248)]