21131478

素因数分解:

$2^1\times 3^2\times {\mathrm{149}}^1\times {\mathrm{7879}}^1$

素因数の和:8036

約数の個数: 24

約数和(自身を含む): 46098000

約数和(自身を除く): 24966522

約数列:

[1, 2, 3, 6, 9, 18, 149, 298, 447, 894, 1341, 2682, 7879, 15758, 23637, 47274, 70911, 141822, 1173971, 2347942, 3521913, 7043826, 10565739, 21131478]

約数ペア:

[(1, 21131478), (2, 10565739), (3, 7043826), (6, 3521913), (9, 2347942), (18, 1173971), (149, 141822), (298, 70911), (447, 47274), (894, 23637), (1341, 15758), (2682, 7879)]