20522872

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 39690000

約数和(自身を除く): 19167128

約数列:

[1, 2, 4, 8, 53, 97, 106, 194, 212, 388, 424, 499, 776, 998, 1996, 3992, 5141, 10282, 20564, 26447, 41128, 48403, 52894, 96806, 105788, 193612, 211576, 387224, 2565359, 5130718, 10261436, 20522872]

約数ペア:

[(1, 20522872), (2, 10261436), (4, 5130718), (8, 2565359), (53, 387224), (97, 211576), (106, 193612), (194, 105788), (212, 96806), (388, 52894), (424, 48403), (499, 41128), (776, 26447), (998, 20564), (1996, 10282), (3992, 5141)]