2000990720

素因数分解:

$2^9\times 5^1\times {\mathrm{29}}^1\times {\mathrm{26953}}^1$

素因数の和:27005

約数の個数: 80

約数和(自身を含む): 4963309560

約数和(自身を除く): 2962318840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 512, 580, 640, 928, 1160, 1280, 1856, 2320, 2560, 3712, 4640, 7424, 9280, 14848, 18560, 26953, 37120, 53906, 74240, 107812, 134765, 215624, 269530, 431248, 539060, 781637, 862496, 1078120, 1563274, 1724992, 2156240, 3126548, 3449984, 3908185, 4312480, 6253096, 6899968, 7816370, 8624960, 12506192, 13799936, 15632740, 17249920, 25012384, 31265480, 34499840, 50024768, 62530960, 68999680, 100049536, 125061920, 200099072, 250123840, 400198144, 500247680, 1000495360, 2000990720]

約数ペア:

[(1, 2000990720), (2, 1000495360), (4, 500247680), (5, 400198144), (8, 250123840), (10, 200099072), (16, 125061920), (20, 100049536), (29, 68999680), (32, 62530960), (40, 50024768), (58, 34499840), (64, 31265480), (80, 25012384), (116, 17249920), (128, 15632740), (145, 13799936), (160, 12506192), (232, 8624960), (256, 7816370), (290, 6899968), (320, 6253096), (464, 4312480), (512, 3908185), (580, 3449984), (640, 3126548), (928, 2156240), (1160, 1724992), (1280, 1563274), (1856, 1078120), (2320, 862496), (2560, 781637), (3712, 539060), (4640, 431248), (7424, 269530), (9280, 215624), (14848, 134765), (18560, 107812), (26953, 74240), (37120, 53906)]