21034389

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 31124736

約数和(自身を除く): 10090347

約数列:

[1, 3, 17, 37, 51, 71, 111, 157, 213, 471, 629, 1207, 1887, 2627, 2669, 3621, 5809, 7881, 8007, 11147, 17427, 33441, 44659, 98753, 133977, 189499, 296259, 412439, 568497, 1237317, 7011463, 21034389]

約数ペア:

[(1, 21034389), (3, 7011463), (17, 1237317), (37, 568497), (51, 412439), (71, 296259), (111, 189499), (157, 133977), (213, 98753), (471, 44659), (629, 33441), (1207, 17427), (1887, 11147), (2627, 8007), (2669, 7881), (3621, 5809)]