21858067

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{379}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 28071360

約数和(自身を除く): 6213293

約数列:

[1, 7, 11, 49, 77, 107, 379, 539, 749, 1177, 2653, 4169, 5243, 8239, 18571, 29183, 40553, 57673, 204281, 283871, 446083, 1987097, 3122581, 21858067]

約数ペア:

[(1, 21858067), (7, 3122581), (11, 1987097), (49, 446083), (77, 283871), (107, 204281), (379, 57673), (539, 40553), (749, 29183), (1177, 18571), (2653, 8239), (4169, 5243)]