21075243

素因数分解:

$3^1\times 7^2\times {\mathrm{307}}^1\times {\mathrm{467}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 11789589

約数列:

[1, 3, 7, 21, 49, 147, 307, 467, 921, 1401, 2149, 3269, 6447, 9807, 15043, 22883, 45129, 68649, 143369, 430107, 1003583, 3010749, 7025081, 21075243]

約数ペア:

[(1, 21075243), (3, 7025081), (7, 3010749), (21, 1003583), (49, 430107), (147, 143369), (307, 68649), (467, 45129), (921, 22883), (1401, 15043), (2149, 9807), (3269, 6447)]