640498560

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:485

約数の個数: 256

約数和(自身を含む): 2237276160

約数和(自身を除く): 1596777600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 67, 78, 80, 96, 104, 120, 128, 130, 134, 156, 160, 192, 195, 201, 208, 240, 260, 268, 312, 320, 335, 383, 384, 390, 402, 416, 480, 520, 536, 624, 640, 670, 766, 780, 804, 832, 871, 960, 1005, 1040, 1072, 1149, 1248, 1340, 1532, 1560, 1608, 1664, 1742, 1915, 1920, 2010, 2080, 2144, 2298, 2496, 2613, 2680, 3064, 3120, 3216, 3484, 3830, 4020, 4160, 4288, 4355, 4596, 4979, 4992, 5226, 5360, 5745, 6128, 6240, 6432, 6968, 7660, 8040, 8320, 8576, 8710, 9192, 9958, 10452, 10720, 11490, 12256, 12480, 12864, 13065, 13936, 14937, 15320, 16080, 17420, 18384, 19916, 20904, 21440, 22980, 24512, 24895, 24960, 25661, 25728, 26130, 27872, 29874, 30640, 32160, 34840, 36768, 39832, 41808, 42880, 45960, 49024, 49790, 51322, 52260, 55744, 59748, 61280, 64320, 69680, 73536, 74685, 76983, 79664, 83616, 91920, 99580, 102644, 104520, 111488, 119496, 122560, 128305, 128640, 139360, 147072, 149370, 153966, 159328, 167232, 183840, 199160, 205288, 209040, 238992, 245120, 256610, 278720, 298740, 307932, 318656, 333593, 334464, 367680, 384915, 398320, 410576, 418080, 477984, 513220, 557440, 597480, 615864, 637312, 667186, 735360, 769830, 796640, 821152, 836160, 955968, 1000779, 1026440, 1194960, 1231728, 1334372, 1539660, 1593280, 1642304, 1667965, 1672320, 1911936, 2001558, 2052880, 2389920, 2463456, 2668744, 3079320, 3186560, 3284608, 3335930, 4003116, 4105760, 4779840, 4926912, 5003895, 5337488, 6158640, 6671860, 8006232, 8211520, 9559680, 9853824, 10007790, 10674976, 12317280, 13343720, 16012464, 16423040, 20015580, 21349952, 24634560, 26687440, 32024928, 40031160, 42699904, 49269120, 53374880, 64049856, 80062320, 106749760, 128099712, 160124640, 213499520, 320249280, 640498560]

約数ペア:

[(1, 640498560), (2, 320249280), (3, 213499520), (4, 160124640), (5, 128099712), (6, 106749760), (8, 80062320), (10, 64049856), (12, 53374880), (13, 49269120), (15, 42699904), (16, 40031160), (20, 32024928), (24, 26687440), (26, 24634560), (30, 21349952), (32, 20015580), (39, 16423040), (40, 16012464), (48, 13343720), (52, 12317280), (60, 10674976), (64, 10007790), (65, 9853824), (67, 9559680), (78, 8211520), (80, 8006232), (96, 6671860), (104, 6158640), (120, 5337488), (128, 5003895), (130, 4926912), (134, 4779840), (156, 4105760), (160, 4003116), (192, 3335930), (195, 3284608), (201, 3186560), (208, 3079320), (240, 2668744), (260, 2463456), (268, 2389920), (312, 2052880), (320, 2001558), (335, 1911936), (383, 1672320), (384, 1667965), (390, 1642304), (402, 1593280), (416, 1539660), (480, 1334372), (520, 1231728), (536, 1194960), (624, 1026440), (640, 1000779), (670, 955968), (766, 836160), (780, 821152), (804, 796640), (832, 769830), (871, 735360), (960, 667186), (1005, 637312), (1040, 615864), (1072, 597480), (1149, 557440), (1248, 513220), (1340, 477984), (1532, 418080), (1560, 410576), (1608, 398320), (1664, 384915), (1742, 367680), (1915, 334464), (1920, 333593), (2010, 318656), (2080, 307932), (2144, 298740), (2298, 278720), (2496, 256610), (2613, 245120), (2680, 238992), (3064, 209040), (3120, 205288), (3216, 199160), (3484, 183840), (3830, 167232), (4020, 159328), (4160, 153966), (4288, 149370), (4355, 147072), (4596, 139360), (4979, 128640), (4992, 128305), (5226, 122560), (5360, 119496), (5745, 111488), (6128, 104520), (6240, 102644), (6432, 99580), (6968, 91920), (7660, 83616), (8040, 79664), (8320, 76983), (8576, 74685), (8710, 73536), (9192, 69680), (9958, 64320), (10452, 61280), (10720, 59748), (11490, 55744), (12256, 52260), (12480, 51322), (12864, 49790), (13065, 49024), (13936, 45960), (14937, 42880), (15320, 41808), (16080, 39832), (17420, 36768), (18384, 34840), (19916, 32160), (20904, 30640), (21440, 29874), (22980, 27872), (24512, 26130), (24895, 25728), (24960, 25661)]