19888144

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:607

約数の個数: 40

約数和(自身を含む): 40176000

約数和(自身を除く): 20287856

約数列:

[1, 2, 4, 8, 16, 47, 53, 94, 106, 188, 212, 376, 424, 499, 752, 848, 998, 1996, 2491, 3992, 4982, 7984, 9964, 19928, 23453, 26447, 39856, 46906, 52894, 93812, 105788, 187624, 211576, 375248, 423152, 1243009, 2486018, 4972036, 9944072, 19888144]

約数ペア:

[(1, 19888144), (2, 9944072), (4, 4972036), (8, 2486018), (16, 1243009), (47, 423152), (53, 375248), (94, 211576), (106, 187624), (188, 105788), (212, 93812), (376, 52894), (424, 46906), (499, 39856), (752, 26447), (848, 23453), (998, 19928), (1996, 9964), (2491, 7984), (3992, 4982)]