21822689

素因数分解:

$7^4\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:238

約数の個数: 20

約数和(自身を含む): 26049300

約数和(自身を除く): 4226611

約数列:

[1, 7, 49, 61, 149, 343, 427, 1043, 2401, 2989, 7301, 9089, 20923, 51107, 63623, 146461, 357749, 445361, 3117527, 21822689]

約数ペア:

[(1, 21822689), (7, 3117527), (49, 445361), (61, 357749), (149, 146461), (343, 63623), (427, 51107), (1043, 20923), (2401, 9089), (2989, 7301)]