640788480

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:459

約数の個数: 288

約数和(自身を含む): 2357245800

約数和(自身を除く): 1716457320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 128, 136, 144, 153, 160, 170, 180, 192, 204, 240, 255, 256, 272, 288, 306, 320, 340, 360, 384, 408, 409, 480, 510, 512, 544, 576, 612, 640, 680, 720, 765, 768, 816, 818, 960, 1020, 1024, 1088, 1152, 1224, 1227, 1280, 1360, 1440, 1530, 1536, 1632, 1636, 1920, 2040, 2045, 2048, 2176, 2304, 2448, 2454, 2560, 2720, 2880, 3060, 3072, 3264, 3272, 3681, 3840, 4080, 4090, 4352, 4608, 4896, 4908, 5120, 5440, 5760, 6120, 6135, 6144, 6528, 6544, 6953, 7362, 7680, 8160, 8180, 8704, 9216, 9792, 9816, 10240, 10880, 11520, 12240, 12270, 13056, 13088, 13906, 14724, 15360, 16320, 16360, 17408, 18405, 18432, 19584, 19632, 20859, 21760, 23040, 24480, 24540, 26112, 26176, 27812, 29448, 30720, 32640, 32720, 34765, 34816, 36810, 39168, 39264, 41718, 43520, 46080, 48960, 49080, 52224, 52352, 55624, 58896, 62577, 65280, 65440, 69530, 73620, 78336, 78528, 83436, 87040, 92160, 97920, 98160, 104295, 104448, 104704, 111248, 117792, 125154, 130560, 130880, 139060, 147240, 156672, 157056, 166872, 174080, 195840, 196320, 208590, 209408, 222496, 235584, 250308, 261120, 261760, 278120, 294480, 312885, 313344, 314112, 333744, 391680, 392640, 417180, 418816, 444992, 471168, 500616, 522240, 523520, 556240, 588960, 625770, 628224, 667488, 783360, 785280, 834360, 837632, 889984, 942336, 1001232, 1047040, 1112480, 1177920, 1251540, 1256448, 1334976, 1566720, 1570560, 1668720, 1779968, 1884672, 2002464, 2094080, 2224960, 2355840, 2503080, 2512896, 2669952, 3141120, 3337440, 3559936, 3769344, 4004928, 4188160, 4449920, 4711680, 5006160, 5339904, 6282240, 6674880, 7119872, 7538688, 8009856, 8899840, 9423360, 10012320, 10679808, 12564480, 13349760, 14239744, 16019712, 17799680, 18846720, 20024640, 21359616, 26699520, 32039424, 35599360, 37693440, 40049280, 42719232, 53399040, 64078848, 71198720, 80098560, 106798080, 128157696, 160197120, 213596160, 320394240, 640788480]

約数ペア:

[(1, 640788480), (2, 320394240), (3, 213596160), (4, 160197120), (5, 128157696), (6, 106798080), (8, 80098560), (9, 71198720), (10, 64078848), (12, 53399040), (15, 42719232), (16, 40049280), (17, 37693440), (18, 35599360), (20, 32039424), (24, 26699520), (30, 21359616), (32, 20024640), (34, 18846720), (36, 17799680), (40, 16019712), (45, 14239744), (48, 13349760), (51, 12564480), (60, 10679808), (64, 10012320), (68, 9423360), (72, 8899840), (80, 8009856), (85, 7538688), (90, 7119872), (96, 6674880), (102, 6282240), (120, 5339904), (128, 5006160), (136, 4711680), (144, 4449920), (153, 4188160), (160, 4004928), (170, 3769344), (180, 3559936), (192, 3337440), (204, 3141120), (240, 2669952), (255, 2512896), (256, 2503080), (272, 2355840), (288, 2224960), (306, 2094080), (320, 2002464), (340, 1884672), (360, 1779968), (384, 1668720), (408, 1570560), (409, 1566720), (480, 1334976), (510, 1256448), (512, 1251540), (544, 1177920), (576, 1112480), (612, 1047040), (640, 1001232), (680, 942336), (720, 889984), (765, 837632), (768, 834360), (816, 785280), (818, 783360), (960, 667488), (1020, 628224), (1024, 625770), (1088, 588960), (1152, 556240), (1224, 523520), (1227, 522240), (1280, 500616), (1360, 471168), (1440, 444992), (1530, 418816), (1536, 417180), (1632, 392640), (1636, 391680), (1920, 333744), (2040, 314112), (2045, 313344), (2048, 312885), (2176, 294480), (2304, 278120), (2448, 261760), (2454, 261120), (2560, 250308), (2720, 235584), (2880, 222496), (3060, 209408), (3072, 208590), (3264, 196320), (3272, 195840), (3681, 174080), (3840, 166872), (4080, 157056), (4090, 156672), (4352, 147240), (4608, 139060), (4896, 130880), (4908, 130560), (5120, 125154), (5440, 117792), (5760, 111248), (6120, 104704), (6135, 104448), (6144, 104295), (6528, 98160), (6544, 97920), (6953, 92160), (7362, 87040), (7680, 83436), (8160, 78528), (8180, 78336), (8704, 73620), (9216, 69530), (9792, 65440), (9816, 65280), (10240, 62577), (10880, 58896), (11520, 55624), (12240, 52352), (12270, 52224), (13056, 49080), (13088, 48960), (13906, 46080), (14724, 43520), (15360, 41718), (16320, 39264), (16360, 39168), (17408, 36810), (18405, 34816), (18432, 34765), (19584, 32720), (19632, 32640), (20859, 30720), (21760, 29448), (23040, 27812), (24480, 26176), (24540, 26112)]