12921951

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7789}}^1$

素因数の和:7878

約数の個数: 16

約数和(自身を含む): 19942400

約数和(自身を除く): 7020449

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 7789, 23367, 54523, 163569, 615331, 1845993, 4307317, 12921951]

約数ペア:

[(1, 12921951), (3, 4307317), (7, 1845993), (21, 615331), (79, 163569), (237, 54523), (553, 23367), (1659, 7789)]