21538224640

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{2137}}^1$

素因数の和:2318

約数の個数: 160

約数和(自身を含む): 53751988224

約数和(自身を除く): 32213763584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 127, 128, 155, 160, 248, 254, 256, 310, 320, 496, 508, 512, 620, 635, 640, 992, 1016, 1240, 1270, 1280, 1984, 2032, 2137, 2480, 2540, 2560, 3937, 3968, 4064, 4274, 4960, 5080, 7874, 7936, 8128, 8548, 9920, 10160, 10685, 15748, 15872, 16256, 17096, 19685, 19840, 20320, 21370, 31496, 32512, 34192, 39370, 39680, 40640, 42740, 62992, 65024, 66247, 68384, 78740, 79360, 81280, 85480, 125984, 132494, 136768, 157480, 162560, 170960, 251968, 264988, 271399, 273536, 314960, 325120, 331235, 341920, 503936, 529976, 542798, 547072, 629920, 662470, 683840, 1007872, 1059952, 1085596, 1094144, 1259840, 1324940, 1356995, 1367680, 2015744, 2119904, 2171192, 2519680, 2649880, 2713990, 2735360, 4239808, 4342384, 5039360, 5299760, 5427980, 5470720, 8413369, 8479616, 8684768, 10078720, 10599520, 10855960, 16826738, 16959232, 17369536, 21199040, 21711920, 33653476, 33918464, 34739072, 42066845, 42398080, 43423840, 67306952, 69478144, 84133690, 84796160, 86847680, 134613904, 138956288, 168267380, 169592320, 173695360, 269227808, 336534760, 347390720, 538455616, 673069520, 694781440, 1076911232, 1346139040, 2153822464, 2692278080, 4307644928, 5384556160, 10769112320, 21538224640]

約数ペア:

[(1, 21538224640), (2, 10769112320), (4, 5384556160), (5, 4307644928), (8, 2692278080), (10, 2153822464), (16, 1346139040), (20, 1076911232), (31, 694781440), (32, 673069520), (40, 538455616), (62, 347390720), (64, 336534760), (80, 269227808), (124, 173695360), (127, 169592320), (128, 168267380), (155, 138956288), (160, 134613904), (248, 86847680), (254, 84796160), (256, 84133690), (310, 69478144), (320, 67306952), (496, 43423840), (508, 42398080), (512, 42066845), (620, 34739072), (635, 33918464), (640, 33653476), (992, 21711920), (1016, 21199040), (1240, 17369536), (1270, 16959232), (1280, 16826738), (1984, 10855960), (2032, 10599520), (2137, 10078720), (2480, 8684768), (2540, 8479616), (2560, 8413369), (3937, 5470720), (3968, 5427980), (4064, 5299760), (4274, 5039360), (4960, 4342384), (5080, 4239808), (7874, 2735360), (7936, 2713990), (8128, 2649880), (8548, 2519680), (9920, 2171192), (10160, 2119904), (10685, 2015744), (15748, 1367680), (15872, 1356995), (16256, 1324940), (17096, 1259840), (19685, 1094144), (19840, 1085596), (20320, 1059952), (21370, 1007872), (31496, 683840), (32512, 662470), (34192, 629920), (39370, 547072), (39680, 542798), (40640, 529976), (42740, 503936), (62992, 341920), (65024, 331235), (66247, 325120), (68384, 314960), (78740, 273536), (79360, 271399), (81280, 264988), (85480, 251968), (125984, 170960), (132494, 162560), (136768, 157480)]