640625664

素因数分解:

$2^{10}\times 3^1\times 7^1\times {\mathrm{31}}^3$

素因数の和:123

約数の個数: 176

約数和(自身を含む): 2016475136

約数和(自身を除く): 1375849472

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 31, 32, 42, 48, 56, 62, 64, 84, 93, 96, 112, 124, 128, 168, 186, 192, 217, 224, 248, 256, 336, 372, 384, 434, 448, 496, 512, 651, 672, 744, 768, 868, 896, 961, 992, 1024, 1302, 1344, 1488, 1536, 1736, 1792, 1922, 1984, 2604, 2688, 2883, 2976, 3072, 3472, 3584, 3844, 3968, 5208, 5376, 5766, 5952, 6727, 6944, 7168, 7688, 7936, 10416, 10752, 11532, 11904, 13454, 13888, 15376, 15872, 20181, 20832, 21504, 23064, 23808, 26908, 27776, 29791, 30752, 31744, 40362, 41664, 46128, 47616, 53816, 55552, 59582, 61504, 80724, 83328, 89373, 92256, 95232, 107632, 111104, 119164, 123008, 161448, 166656, 178746, 184512, 208537, 215264, 222208, 238328, 246016, 322896, 333312, 357492, 369024, 417074, 430528, 476656, 492032, 625611, 645792, 666624, 714984, 738048, 834148, 861056, 953312, 984064, 1251222, 1291584, 1429968, 1476096, 1668296, 1722112, 1906624, 2502444, 2583168, 2859936, 2952192, 3336592, 3444224, 3813248, 5004888, 5166336, 5719872, 6673184, 6888448, 7626496, 10009776, 10332672, 11439744, 13346368, 15252992, 20019552, 20665344, 22879488, 26692736, 30505984, 40039104, 45758976, 53385472, 80078208, 91517952, 106770944, 160156416, 213541888, 320312832, 640625664]

約数ペア:

[(1, 640625664), (2, 320312832), (3, 213541888), (4, 160156416), (6, 106770944), (7, 91517952), (8, 80078208), (12, 53385472), (14, 45758976), (16, 40039104), (21, 30505984), (24, 26692736), (28, 22879488), (31, 20665344), (32, 20019552), (42, 15252992), (48, 13346368), (56, 11439744), (62, 10332672), (64, 10009776), (84, 7626496), (93, 6888448), (96, 6673184), (112, 5719872), (124, 5166336), (128, 5004888), (168, 3813248), (186, 3444224), (192, 3336592), (217, 2952192), (224, 2859936), (248, 2583168), (256, 2502444), (336, 1906624), (372, 1722112), (384, 1668296), (434, 1476096), (448, 1429968), (496, 1291584), (512, 1251222), (651, 984064), (672, 953312), (744, 861056), (768, 834148), (868, 738048), (896, 714984), (961, 666624), (992, 645792), (1024, 625611), (1302, 492032), (1344, 476656), (1488, 430528), (1536, 417074), (1736, 369024), (1792, 357492), (1922, 333312), (1984, 322896), (2604, 246016), (2688, 238328), (2883, 222208), (2976, 215264), (3072, 208537), (3472, 184512), (3584, 178746), (3844, 166656), (3968, 161448), (5208, 123008), (5376, 119164), (5766, 111104), (5952, 107632), (6727, 95232), (6944, 92256), (7168, 89373), (7688, 83328), (7936, 80724), (10416, 61504), (10752, 59582), (11532, 55552), (11904, 53816), (13454, 47616), (13888, 46128), (15376, 41664), (15872, 40362), (20181, 31744), (20832, 30752), (21504, 29791), (23064, 27776), (23808, 26908)]