20413767

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10793913

約数列:

[1, 3, 11, 29, 33, 83, 87, 249, 257, 319, 771, 913, 957, 2407, 2739, 2827, 7221, 7453, 8481, 21331, 22359, 26477, 63993, 79431, 81983, 234641, 245949, 618599, 703923, 1855797, 6804589, 20413767]

約数ペア:

[(1, 20413767), (3, 6804589), (11, 1855797), (29, 703923), (33, 618599), (83, 245949), (87, 234641), (249, 81983), (257, 79431), (319, 63993), (771, 26477), (913, 22359), (957, 21331), (2407, 8481), (2739, 7453), (2827, 7221)]