20656456

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19623224

約数列:

[1, 2, 4, 8, 41, 71, 82, 142, 164, 284, 328, 568, 887, 1774, 2911, 3548, 5822, 7096, 11644, 23288, 36367, 62977, 72734, 125954, 145468, 251908, 290936, 503816, 2582057, 5164114, 10328228, 20656456]

約数ペア:

[(1, 20656456), (2, 10328228), (4, 5164114), (8, 2582057), (41, 503816), (71, 290936), (82, 251908), (142, 145468), (164, 125954), (284, 72734), (328, 62977), (568, 36367), (887, 23288), (1774, 11644), (2911, 7096), (3548, 5822)]