20785480

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{2903}}^1$

素因数の和:3093

約数の個数: 32

約数和(自身を含む): 47044800

約数和(自身を除く): 26259320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 2903, 3580, 5806, 7160, 11612, 14515, 23224, 29030, 58060, 116120, 519637, 1039274, 2078548, 2598185, 4157096, 5196370, 10392740, 20785480]

約数ペア:

[(1, 20785480), (2, 10392740), (4, 5196370), (5, 4157096), (8, 2598185), (10, 2078548), (20, 1039274), (40, 519637), (179, 116120), (358, 58060), (716, 29030), (895, 23224), (1432, 14515), (1790, 11612), (2903, 7160), (3580, 5806)]