21047988

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{134923}}^1$

素因数の和:134943

約数の個数: 24

約数和(自身を含む): 52890208

約数和(自身を除く): 31842220

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 134923, 269846, 404769, 539692, 809538, 1619076, 1753999, 3507998, 5261997, 7015996, 10523994, 21047988]

約数ペア:

[(1, 21047988), (2, 10523994), (3, 7015996), (4, 5261997), (6, 3507998), (12, 1753999), (13, 1619076), (26, 809538), (39, 539692), (52, 404769), (78, 269846), (156, 134923)]