1288377856

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{81173}}^1$

素因数の和:81222

約数の個数: 40

約数和(自身を含む): 2657312064

約数和(自身を除く): 1368934208

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1984, 3968, 7936, 15872, 81173, 162346, 324692, 649384, 1298768, 2516363, 2597536, 5032726, 5195072, 10065452, 10390144, 20130904, 20780288, 40261808, 41560576, 80523616, 161047232, 322094464, 644188928, 1288377856]

約数ペア:

[(1, 1288377856), (2, 644188928), (4, 322094464), (8, 161047232), (16, 80523616), (31, 41560576), (32, 40261808), (62, 20780288), (64, 20130904), (124, 10390144), (128, 10065452), (248, 5195072), (256, 5032726), (496, 2597536), (512, 2516363), (992, 1298768), (1984, 649384), (3968, 324692), (7936, 162346), (15872, 81173)]