2018981920

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^2\times {\mathrm{1237}}^1$

素因数の和:1454

約数の個数: 72

約数和(自身を含む): 4821433092

約数和(自身を除く): 2802451172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1237, 1616, 2020, 2474, 3232, 4040, 4948, 6185, 8080, 9896, 10201, 12370, 16160, 19792, 20402, 24740, 39584, 40804, 49480, 51005, 81608, 98960, 102010, 124937, 163216, 197920, 204020, 249874, 326432, 408040, 499748, 624685, 816080, 999496, 1249370, 1632160, 1998992, 2498740, 3997984, 4997480, 9994960, 12618637, 19989920, 25237274, 50474548, 63093185, 100949096, 126186370, 201898192, 252372740, 403796384, 504745480, 1009490960, 2018981920]

約数ペア:

[(1, 2018981920), (2, 1009490960), (4, 504745480), (5, 403796384), (8, 252372740), (10, 201898192), (16, 126186370), (20, 100949096), (32, 63093185), (40, 50474548), (80, 25237274), (101, 19989920), (160, 12618637), (202, 9994960), (404, 4997480), (505, 3997984), (808, 2498740), (1010, 1998992), (1237, 1632160), (1616, 1249370), (2020, 999496), (2474, 816080), (3232, 624685), (4040, 499748), (4948, 408040), (6185, 326432), (8080, 249874), (9896, 204020), (10201, 197920), (12370, 163216), (16160, 124937), (19792, 102010), (20402, 98960), (24740, 81608), (39584, 51005), (40804, 49480)]