639336321

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{607157}}^1$

素因数の和:607182

約数の個数: 20

約数和(自身を含む): 1028525652

約数和(自身を除く): 389189331

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 607157, 1821471, 5464413, 7893041, 16393239, 23679123, 49179717, 71037369, 213112107, 639336321]

約数ペア:

[(1, 639336321), (3, 213112107), (9, 71037369), (13, 49179717), (27, 23679123), (39, 16393239), (81, 7893041), (117, 5464413), (351, 1821471), (1053, 607157)]