20784639

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{3533}}^1$

素因数の和:3626

約数の個数: 16

約数和(自身を含む): 29007072

約数和(自身を除く): 8222433

約数列:

[1, 3, 37, 53, 111, 159, 1961, 3533, 5883, 10599, 130721, 187249, 392163, 561747, 6928213, 20784639]

約数ペア:

[(1, 20784639), (3, 6928213), (37, 561747), (53, 392163), (111, 187249), (159, 130721), (1961, 10599), (3533, 5883)]