20950580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{569}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 50561280

約数和(自身を除く): 29610700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 526, 569, 1052, 1138, 1315, 1841, 2276, 2630, 2845, 3682, 3983, 5260, 5690, 7364, 7966, 9205, 11380, 15932, 18410, 19915, 36820, 39830, 79660, 149647, 299294, 598588, 748235, 1047529, 1496470, 2095058, 2992940, 4190116, 5237645, 10475290, 20950580]

約数ペア:

[(1, 20950580), (2, 10475290), (4, 5237645), (5, 4190116), (7, 2992940), (10, 2095058), (14, 1496470), (20, 1047529), (28, 748235), (35, 598588), (70, 299294), (140, 149647), (263, 79660), (526, 39830), (569, 36820), (1052, 19915), (1138, 18410), (1315, 15932), (1841, 11380), (2276, 9205), (2630, 7966), (2845, 7364), (3682, 5690), (3983, 5260)]