127521280

素因数分解:

$2^9\times 5^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:589

約数の個数: 80

約数和(自身を含む): 309232440

約数和(自身を除く): 181711160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 256, 320, 436, 457, 512, 545, 640, 872, 914, 1090, 1280, 1744, 1828, 2180, 2285, 2560, 3488, 3656, 4360, 4570, 6976, 7312, 8720, 9140, 13952, 14624, 17440, 18280, 27904, 29248, 34880, 36560, 49813, 55808, 58496, 69760, 73120, 99626, 116992, 139520, 146240, 199252, 233984, 249065, 279040, 292480, 398504, 498130, 584960, 797008, 996260, 1169920, 1594016, 1992520, 3188032, 3985040, 6376064, 7970080, 12752128, 15940160, 25504256, 31880320, 63760640, 127521280]

約数ペア:

[(1, 127521280), (2, 63760640), (4, 31880320), (5, 25504256), (8, 15940160), (10, 12752128), (16, 7970080), (20, 6376064), (32, 3985040), (40, 3188032), (64, 1992520), (80, 1594016), (109, 1169920), (128, 996260), (160, 797008), (218, 584960), (256, 498130), (320, 398504), (436, 292480), (457, 279040), (512, 249065), (545, 233984), (640, 199252), (872, 146240), (914, 139520), (1090, 116992), (1280, 99626), (1744, 73120), (1828, 69760), (2180, 58496), (2285, 55808), (2560, 49813), (3488, 36560), (3656, 34880), (4360, 29248), (4570, 27904), (6976, 18280), (7312, 17440), (8720, 14624), (9140, 13952)]