21075537

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{461}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 32864832

約数和(自身を除く): 11789295

約数列:

[1, 3, 7, 21, 49, 147, 311, 461, 933, 1383, 2177, 3227, 6531, 9681, 15239, 22589, 45717, 67767, 143371, 430113, 1003597, 3010791, 7025179, 21075537]

約数ペア:

[(1, 21075537), (3, 7025179), (7, 3010791), (21, 1003597), (49, 430113), (147, 143371), (311, 67767), (461, 45717), (933, 22589), (1383, 15239), (2177, 9681), (3227, 6531)]