217081719

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{383}}^1\times {\mathrm{887}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 319168512

約数和(自身を除く): 102086793

約数列:

[1, 3, 9, 71, 213, 383, 639, 887, 1149, 2661, 3447, 7983, 27193, 62977, 81579, 188931, 244737, 339721, 566793, 1019163, 3057489, 24120191, 72360573, 217081719]

約数ペア:

[(1, 217081719), (3, 72360573), (9, 24120191), (71, 3057489), (213, 1019163), (383, 566793), (639, 339721), (887, 244737), (1149, 188931), (2661, 81579), (3447, 62977), (7983, 27193)]