20981824

素因数分解:

$2^6\times {\mathrm{137}}^1\times {\mathrm{2393}}^1$

素因数の和:2542

約数の個数: 28

約数和(自身を含む): 41957244

約数和(自身を除く): 20975420

約数列:

[1, 2, 4, 8, 16, 32, 64, 137, 274, 548, 1096, 2192, 2393, 4384, 4786, 8768, 9572, 19144, 38288, 76576, 153152, 327841, 655682, 1311364, 2622728, 5245456, 10490912, 20981824]

約数ペア:

[(1, 20981824), (2, 10490912), (4, 5245456), (8, 2622728), (16, 1311364), (32, 655682), (64, 327841), (137, 153152), (274, 76576), (548, 38288), (1096, 19144), (2192, 9572), (2393, 8768), (4384, 4786)]