20176752820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{408271}}^1$

素因数の和:408640

約数の個数: 48

約数和(自身を含む): 48561504768

約数和(自身を除く): 28384751948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 353, 706, 1412, 1765, 2471, 3530, 4942, 7060, 9884, 12355, 24710, 49420, 408271, 816542, 1633084, 2041355, 2857897, 4082710, 5715794, 8165420, 11431588, 14289485, 28578970, 57157940, 144119663, 288239326, 576478652, 720598315, 1008837641, 1441196630, 2017675282, 2882393260, 4035350564, 5044188205, 10088376410, 20176752820]

約数ペア:

[(1, 20176752820), (2, 10088376410), (4, 5044188205), (5, 4035350564), (7, 2882393260), (10, 2017675282), (14, 1441196630), (20, 1008837641), (28, 720598315), (35, 576478652), (70, 288239326), (140, 144119663), (353, 57157940), (706, 28578970), (1412, 14289485), (1765, 11431588), (2471, 8165420), (3530, 5715794), (4942, 4082710), (7060, 2857897), (9884, 2041355), (12355, 1633084), (24710, 816542), (49420, 408271)]