20915816

素因数分解:

$2^3\times {\mathrm{523}}^1\times {\mathrm{4999}}^1$

素因数の和:5528

約数の個数: 16

約数和(自身を含む): 39300000

約数和(自身を除く): 18384184

約数列:

[1, 2, 4, 8, 523, 1046, 2092, 4184, 4999, 9998, 19996, 39992, 2614477, 5228954, 10457908, 20915816]

約数ペア:

[(1, 20915816), (2, 10457908), (4, 5228954), (8, 2614477), (523, 39992), (1046, 19996), (2092, 9998), (4184, 4999)]