20809173

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{757}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 37329984

約数和(自身を除く): 16520811

約数列:

[1, 3, 7, 11, 17, 21, 33, 49, 51, 77, 119, 147, 187, 231, 357, 539, 561, 757, 833, 1309, 1617, 2271, 2499, 3927, 5299, 8327, 9163, 12869, 15897, 24981, 27489, 37093, 38607, 58289, 90083, 111279, 141559, 174867, 270249, 408023, 424677, 630581, 990913, 1224069, 1891743, 2972739, 6936391, 20809173]

約数ペア:

[(1, 20809173), (3, 6936391), (7, 2972739), (11, 1891743), (17, 1224069), (21, 990913), (33, 630581), (49, 424677), (51, 408023), (77, 270249), (119, 174867), (147, 141559), (187, 111279), (231, 90083), (357, 58289), (539, 38607), (561, 37093), (757, 27489), (833, 24981), (1309, 15897), (1617, 12869), (2271, 9163), (2499, 8327), (3927, 5299)]