20971341

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:1001

約数の個数: 24

約数和(自身を含む): 31584384

約数和(自身を除く): 10613043

約数列:

[1, 3, 9, 37, 71, 111, 213, 333, 639, 887, 2627, 2661, 7881, 7983, 23643, 32819, 62977, 98457, 188931, 295371, 566793, 2330149, 6990447, 20971341]

約数ペア:

[(1, 20971341), (3, 6990447), (9, 2330149), (37, 566793), (71, 295371), (111, 188931), (213, 98457), (333, 62977), (639, 32819), (887, 23643), (2627, 7983), (2661, 7881)]