21841897

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{827}}^1$

素因数の和:866

約数の個数: 20

約数和(自身を含む): 27830736

約数和(自身を除く): 5988839

約数列:

[1, 7, 11, 49, 77, 343, 539, 827, 2401, 3773, 5789, 9097, 26411, 40523, 63679, 283661, 445753, 1985627, 3120271, 21841897]

約数ペア:

[(1, 21841897), (7, 3120271), (11, 1985627), (49, 445753), (77, 283661), (343, 63679), (539, 40523), (827, 26411), (2401, 9097), (3773, 5789)]